Market sizing that shows how much of the opportunity you can really win.
Gully Sales sizes your market bottom-up: TAM, SAM and SOM in rupees and customer counts, with every assumption written down, so you invest knowing what is there, what is reachable and what would have to be true.
- A defensible TAM, SAM and SOM built from evidence, not from a headline industry figure.
- Segment economics that show where margin and reachable demand actually overlap.
- Sensitivity scenarios so you know which assumption breaks the case if it is wrong.
Gully Sales Private Limited works with small and medium businesses across India on strategy, marketing, sales and revenue operations.
In one paragraph
What is Market Sizing and Opportunity Assessment?
Market sizing and opportunity assessment is a structured estimate of how much demand exists for what you sell, how much of it you can reach, and how much you can realistically win. Gully Sales builds it bottom-up for Indian SMBs, with TAM, SAM and SOM, demand drivers, segment economics and sensitivity scenarios, so growth decisions rest on numbers you can defend, not on a report's headline.
The problem
Your growth plan rests on a market figure nobody has tested.
Most owners carry a market number in their head, from an industry report, a distributor's estimate or a competitor's claim. It is probably not wrong, but it is not yours: it counts everyone, everywhere, buying everything in the category. When a plant, a territory or a bank proposal rests on it, the gap between that headline and the market you can reach is where the money goes.
You will recognise it as
- The market size in your business plan is a national category figure, not the segments you can serve.
- Two people quote two different numbers for the same opportunity, and both defend theirs.
- A territory or product line was launched on an estimate, and nobody can say how much of it has been captured.
- An investor, lender or board member asked for TAM, SAM and SOM, and the answer was assembled over a weekend.
What it costs the business
- Capital goes to the biggest-sounding market rather than the one with the most reachable, profitable demand.
- Sales teams are handed targets the market cannot support, so misses look like effort problems when they are arithmetic problems.
- When a lender or investor tests the assumptions, there is no working to show and the conversation stalls.
Why it persists. Sizing a market properly takes evidence, discipline and a few undistracted days, which a growing business rarely has. Category reports are easy to find and flattering to quote. Nobody is rewarded for shrinking the opportunity on paper. And because assumptions are seldom written down, there is nothing to revise when the market moves.
If it stays unresolved. The business keeps betting on the market it hopes exists rather than the one it can reach, and the correction arrives later as a write-off, a stalled expansion or a growth plan quietly abandoned.
What changes
Your growth choices start resting on evidence you can show anyone.
In the first weeks
- One agreed TAM, SAM and SOM in rupees and customer counts, with every assumption written down.
- Segments ranked by size, reachability and margin, so the first target is a choice, not a guess.
In how the work runs
- Sales targets and territory plans are checked against real headroom before they are issued.
- The model is updated by changing an input when a price, a regulation or a competitor changes.
In sales and marketing
- Investment goes to the opportunity with the most reachable, profitable demand, not the most impressive headline.
- Weak opportunities are dropped early, before they consume a launch budget.
In what management can see
- Progress in a new segment is read as share of a known SOM rather than as revenue in isolation.
Over the longer term
- Opportunity assessment becomes a habit that runs before every major bet, not a one-time exercise.
Gully Sales controls the quality of the model, the evidence behind it and the clarity of the recommendation. What you win depends on the offer, the team and the execution that follow; sizing tells you what is reachable, not that you will capture it.
Who it is for
This is for businesses about to make a bet they cannot easily reverse.
The businesses it suits
- Founders and CEOs of Indian SMBs weighing a new product, plant, territory or channel that needs real capital.
- Business heads choosing between two or three growth options with one budget.
- Companies preparing a bank proposal, investor deck or board paper that needs TAM, SAM and SOM they can defend.
- Manufacturers, distributors, B2B service firms and consumer brands whose category data is thin or unreliable.
What usually prompts the call
- A new-market or new-product decision is on the table and the numbers behind it are second-hand.
- Sales has missed targets for several quarters and nobody can say whether the target or the effort was wrong.
- Two divisions are competing for the same expansion budget with incompatible estimates.
What Gully Sales does
The work, component by component.
TAM, SAM and SOM
We size total demand for what you sell, the part your product, price and reach can address, and the share you can realistically win in a defined period. Each layer is built bottom-up from customer counts, frequency and spend, then cross-checked against top-down figures.
- Why it matters:
- The headline category figure hides the only number that matters: the slice you can serve and win with what you have.
- You receive:
- Three-layer sizing model in rupees and customer counts, in a spreadsheet you own.
- Business value:
- You stop planning against a market full of customers you will never reach.
Demand drivers
We identify what actually causes buying in your category, such as replacement cycles, regulation, project starts, seasonality and distributor behaviour, and rank each driver by direction and by how much it moves demand.
- Why it matters:
- A market of the right size that is shrinking, or that buys in the quarter you are not ready for, is a different opportunity.
- You receive:
- Demand driver map with direction, strength and a leading indicator for each driver.
- Business value:
- You know whether the opportunity is moving towards you or away from you, and when it buys.
Segment economics
We split the serviceable market into segments by size, geography, buying behaviour and channel, and estimate for each the likely deal size, cost to acquire, cost to serve and margin.
- Why it matters:
- The largest segment is often the hardest to serve profitably; the second-largest may be the one that funds the business.
- You receive:
- Segment comparison table ranking each segment on size, margin, reachability and fit.
- Business value:
- The first segment you target is the one that pays, not the one that is loudest.
Assumptions and sensitivity scenarios
Every input traces to a source or a stated assumption with a confidence rating. We flex the heaviest assumptions, such as adoption, price and win rate, across base, cautious and optimistic cases, and name the one that breaks the case.
- Why it matters:
- What decides a bet is not how big the market is, but what has to be true for it to work and how likely that is.
- You receive:
- Assumptions register and three-scenario summary with the break-even assumption identified.
- Business value:
- You can defend the number in a room, and you know which assumption to watch.
Opportunity recommendation and roadmap
We bring sizing, drivers, economics and scenarios into one recommendation: which opportunity to pursue, which segment first, what to validate before committing and what the first phase should test. If the honest answer is not yet, we say so.
- Why it matters:
- A sizing that ends in a spreadsheet changes nothing. The value is in the decision it makes possible and the sequence it sets.
- You receive:
- Written recommendation with a phased roadmap and go, no-go and not-yet conditions.
- Business value:
- The decision moves from a debate to a plan with named next steps and owners.
What you will have at the end.
- Bottom-up TAM, SAM and SOM model in an editable spreadsheet, with a source on every line.
- Demand driver map: what moves buying in your category, in which direction, and what to watch.
- Segment economics table comparing deal size, acquisition cost, cost to serve and margin.
- Assumptions register with source, confidence rating and validation method for each input.
- Sensitivity analysis across base, cautious and optimistic cases, with the break-even assumption named.
- Validation plan: which assumptions to test with customers, dealers or pilots before committing capital.
- Opportunity recommendation memo with a phased roadmap and go, no-go and not-yet conditions.
- A leadership walkthrough of the model so the people who will use the numbers know how they were built.
How it runs
The engagement, step by step.
- 1
Frame the decision
We start with the decision the sizing must support: a territory, a product line, a channel, a capacity expansion or a funding round. That fixes the market definition, the unit of demand, the period and the precision needed.
- You provide:
- The decision under consideration, sales data by product and region, and any existing estimates or reports.
- We produce:
- A one-page sizing brief defining the market, the unit of demand and the question to answer.
- Done when:
- Leadership signs off the market definition and the decision it serves.
- 2
Gather the evidence
We assemble what exists: public and trade data, your sales and enquiry history, and what your dealers know. Then we fill the gaps with structured conversations with customers, channel partners and people who know the category.
- You provide:
- Introductions to a few customers, dealers or partners, and access to sales and enquiry records.
- We produce:
- Evidence log with each source rated for reliability and recency.
- Done when:
- Every input the model needs has a source or a stated, flagged assumption.
- 3
Build the model and segment economics
We construct TAM, SAM and SOM bottom-up, reconcile against any top-down figures, and investigate rather than average where they disagree. We then overlay demand drivers and segment economics, and rank segments on attractiveness and fit.
- You provide:
- Cost and margin data by product or segment, and your channel and sales capacity constraints.
- We produce:
- The sizing model, demand driver map and segment comparison table, with reconciliation notes.
- Done when:
- Segments are ranked and the first target segment is identified with reasons.
- 4
Stress the assumptions
We run sensitivity scenarios on the inputs that carry the most weight and identify which one breaks the case. The heaviest assumptions go into a validation plan: who to speak to, what to test and what would change the recommendation.
- You provide:
- A view on which risks matter most to you, and your appetite for a pilot or a small test.
- We produce:
- Three-scenario summary, break-even analysis and validation plan.
- Done when:
- You know the assumption to watch and how it will be checked before capital is committed.
- 5
Recommend and plan
We present the recommendation to leadership: pursue, do not pursue, or not yet, with the roadmap and conditions attached. We walk your team through the model so it can be revised without us.
- You provide:
- The decision-makers in the room and a decision on next steps.
- We produce:
- Recommendation memo, phased roadmap and handover of the working model.
- Done when:
- A decision is taken and the next phase has owners and checkpoints.
Ways to work with us
A snapshot, a full assessment, or several opportunities compared side by side.
Opportunity snapshot
A focused sizing of one opportunity from existing data and a few expert conversations. Suited to an early go or no-go, or a funding document that needs defensible TAM, SAM and SOM.
Full opportunity assessment
The complete method: bottom-up sizing, demand drivers, segment economics, assumptions register, sensitivity scenarios, validation plan and a recommendation with a phased roadmap. Suited to a capital decision.
Comparative assessment
Two or more opportunities sized on the same basis so leadership can rank them and allocate one budget with confidence, with a single recommended sequence.
Why Gully Sales
What you are actually choosing when you choose us.
We size the market you can serve, not the category you are in.
We start from your product, your price and your reach, not an industry headline. The result is a SAM and SOM that reflect what you can sell, the only number a growth decision should rest on.
The working stays with you, in a spreadsheet you can change.
The model is built to be opened, questioned and revised by your own team. When a price moves or a competitor enters, you update an input rather than commission a new study.
We say not yet when the evidence says not yet.
An assessment that always ends in go is a sales document. Ours is tied to stated conditions; if the reachable market does not justify the investment, the report says so and explains what would change the answer.
The sizing is built in the units your sales plan already uses.
Gully Sales works across marketing, sales, channels and revenue operations, so the assessment comes in the same customer counts, deal sizes and margins your targets and pipeline use. It turns into a plan rather than sitting in a drawer.
Where it applies
The same service, in different businesses.
Manufacturing
- The situation:
- A components manufacturer is considering a second plant for a new region on a distributor's assurance that demand is strong.
- How it applies:
- Bottom-up sizing of the region by end-user count and consumption, dealer reach analysis and a cautious scenario on the capacity ramp.
- Likely benefit:
- The plant is sized to reachable demand, and the distributor's assurance becomes a tested assumption.
B2B services
- The situation:
- An engineering services firm wants to add a service line and must know whether demand justifies hiring ahead of revenue.
- How it applies:
- Sizing by target account count and spend, segment economics by client size, and validation conversations with existing clients before hiring.
- Likely benefit:
- Hiring is sequenced against a sized pipeline rather than against optimism.
Distribution and trading
- The situation:
- A distributor is offered an exclusive territory for a new brand and must decide quickly whether it can support the commitment.
- How it applies:
- A rapid snapshot: outlet counts, category throughput per outlet, competing brands and a break-even scenario on the commitment terms.
- Likely benefit:
- The commitment is accepted, negotiated down or declined on numbers rather than on the principal's pitch.
Consumer brands
- The situation:
- A food or personal care brand that sells well in one city wants to know which of three metros to enter next.
- How it applies:
- Comparative assessment of the three cities on serviceable households, channel reach, acquisition cost and margin, with one recommended sequence.
- Likely benefit:
- One city is chosen with reasons, and the launch budget is not split three ways.
Questions buyers ask
Before you enquire, the answers you will want.
What is the difference between TAM, SAM and SOM?
TAM is the total demand for what you sell if every possible buyer bought it. SAM is the part your product, price, channels and geography can actually address. SOM is the share of SAM you can realistically win in a defined period, given competitors and your capacity. For most Indian SMBs the useful number is SAM or SOM.
How will the market-size assumptions be validated?
Every assumption is logged with a source, a confidence rating and a validation method. The ones that move the answer most are tested before you commit money: structured conversations with customers and dealers, checks against enquiry and order history, comparison with reliable public data and, where it makes sense, a small pilot.
Is this the same as market research?
No, though they work together. Market research gathers evidence about customers, competitors and the category. Market sizing and opportunity assessment turns that evidence into a decision: how much demand is reachable, which segment to target first, what has to be true for the investment to pay, and whether to proceed.
What inputs will you need from us?
The decision you are trying to make, sales and enquiry data by product and region, pricing and margin by product or segment, a view of your channel and sales capacity, and introductions to a few customers, dealers or partners we can speak with. Gaps become flagged assumptions rather than reasons to stop.
How long does an opportunity assessment take?
It depends on how many opportunities are being sized, how much data exists and how many conversations the validation plan needs. A snapshot from existing data is quicker than a full assessment with primary conversations. The duration, and what it depends on from your side, is agreed in the sizing brief before work begins.
What if reliable data does not exist for our category?
That is normal in many Indian SMB markets, and it is why we build bottom-up. Dealer and outlet counts, consumption per customer, project pipelines, enquiry logs, trade directories and structured conversations can produce a defensible estimate where no report exists. Each input carries a confidence rating, so you see where the estimate is firm and where it rests on judgement.
How is success measured after the assessment?
First by the decision: a signed-off go, no-go or not-yet, with the heavy assumptions tested and a plan attached. Then, once you enter, by progress against the model: qualified pipeline and revenue in the target segment as a share of SOM, time from decision to first revenue, and whether actuals sit within the scenario range.
What is excluded from the scope?
The assessment sizes the opportunity and recommends a route. It does not include the full entry plan, marketing and sales campaigns, channel appointments, pricing design or the financing document, though each is a service Gully Sales offers separately and the sizing is built to feed them. A large quantitative survey, if needed, is scoped on its own.
Talk to us
Test the market figure your plan rests on before the money is committed to it.
The free audit is a working session, not a pitch. We look at the decision in front of you and the numbers behind it, and tell you whether a full assessment is warranted or a lighter approach would serve you.
- No obligation and no sales script
- A reply from someone who does the work
- Your details are never sold or shared