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Notes for owners · Industry playbooks

Protein and fitness nutrition: how buyers choose between brands online

Online protein buyers compare the label values per serving, the price per gram of protein and their trust in the seller, so a listing should show all three plainly on its first screen.

The GullySales team · Updated 17 Oct 2026 · 6 min read

Editorial illustration for E-commerce and marketplace marketing
On this page
  1. What does a protein buyer compare first?
  2. Price per serving is the sum they do on their phone
  3. Trust in the seller decides between two good labels
  4. Imagine a whey brand in Indore that lost on scoop size
  5. What goes on the first screen of a protein listing
  6. When the arithmetic is against you
  7. Do the sum for your three rivals

Your tub has more protein in every scoop, and the buyer still picked the one that looked cheaper. Online, a protein buyer chooses on three things. The first is what the label says per serving. The second is what each serving, or each gram of protein, actually costs. The third is whether they trust you to send a genuine, sealed, in-date tub. Too many listings make the buyer dig for all three. Put them on the first screen in plain numbers. The careful buyer will do the comparison anyway; give them the right figures to do it with.

What does a protein buyer compare first?

The back of the tub, or the photograph of it. A buyer who has bought protein before goes straight to the serving size in grams, the protein per serving and the added sugar. Then they check what the protein actually is: whey concentrate, isolate, a blend, or a plant source such as pea. A first-time buyer, sent by a gym trainer or a friend, asks the trainer's question instead. Is this one good?

Serving sizes are where comparisons go wrong. One brand's scoop is 30 g, another's is 36 g, and an imported tub gives its weight in pounds. "24 g protein per scoop" means nothing until you know the scoop. Buyers who know this read the per 100 g column on the label. The rest compare scoops, and the brand with the biggest scoop looks generous.

Two smaller things decide the shortlist for some buyers. Vegetarian households look for the green mark before anything else. Plant-protein buyers look for the source and ask whether the blend is complete.

Price per serving is the sum they do on their phone

Buyers divide. Tub price by servings, and the sharper ones tub price by total grams of protein. Do the sum for them, and do it honestly. The three tubs below are illustrative; the labels and prices are made up to show the arithmetic.

Tub ATub BTub C
Pack1 kg1 kg2 lb (907 g)
Serving33 g30 g31 g
Protein per serving25 g20 g24 g
Servings in the tub303329
Price₹2,400₹2,150₹2,900
Price per serving₹80₹65₹100
Price per 100 g of protein₹320₹326₹417

Tub B looks like the bargain at ₹65 a serving. Per gram of protein it costs more than Tub A, because each scoop carries less protein. A buyer comparing only price per serving picks B. A buyer reading the protein line picks A, but only if A's listing put that line where they could see it.

So the rule for your listing is simple. Next to the price, show the protein per serving and the price per 100 g of protein, worked out from your own label. Keep the arithmetic visible. Do not fiddle the serving size to win the sum. Someone weighs a scoop sooner or later.

The sum has one limit. It compares like with like only within one kind of protein. An isolate costs more per gram than a concentrate for reasons the buyer may value, so compare isolate with isolate.

Trust in the seller decides between two good labels

When two tubs are close on label and price, the buyer picks the seller they believe. Protein is a category where buyers worry about fakes. What settles the worry is evidence they can check: the batch on the tub in your photograph, the seal, and your status as brand or authorised seller. Our note on showing a health product is genuine sets out the photographs and replies in detail.

Two things drain trust fast. One is a price far below everyone else's with no reason given. The other is a listing whose only photograph is a polished render of the tub, with no batch in sight.

Imagine a whey brand in Indore that lost on scoop size

Imagine a young whey brand in Indore selling on its own site and one marketplace. Its tub is Tub A from the table. The main image led with "1 kg, 30 servings, ₹2,400". The protein per serving appeared only in the fourth image, a photograph of the label taken at an angle under a tube light.

Buyers set it beside a tub offering "33 servings, ₹2,150", saw fewer servings for more money, and left. The founders started talking about a price cut.

They changed the listing instead, and it cost nothing. The main image gained one line: "25 g protein per serving, ₹320 per 100 g of protein". The first bullet set out the sum in plain numbers. The label was photographed again, flat and sharp. The brand compared itself with "a typical 30 g scoop with 20 g of protein" and never named a rival. The price stayed where it was.

What goes on the first screen of a protein listing

Work down the listing in this order, and stop adding once a buyer has what they need:

  • The main image carries the tub and one line with protein per serving and price per 100 g of protein, when that sum is in your favour.
  • A title that names the protein type, flavour, weight and servings: "Whey protein concentrate, chocolate, 1 kg, 30 servings".
  • In the first bullet, serving size, protein, added sugar and the vegetarian mark.
  • The batch now dispatching, its best-before date, the seal and your seller status, in the second.
  • Images two to four: the label flat and readable, the amino acid profile, and the lab report for the shipping batch if you hold one.

Leave out "lean muscle", "fat loss" and transformation photographs. Results claims on fitness nutrition are regulated, and the rules differ by product and body and change, so your adviser decides what can be said. The label and the arithmetic sell to the careful buyer without them.

When the arithmetic is against you

If your tub costs more per gram of protein, do not lead with the sum. Lead with what you can prove and the cheaper tub cannot. That might be an isolate rather than a concentrate, a lab report for every batch, a flavour buyers reorder, or a small pack for first-timers. If none of that is true, the honest fix is the price or the product. A cleverer listing will not hold for long.

Do the sum for your three rivals

Work out your own price per 100 g of protein from your label, then the same figure for the three tubs you lose to most. If you win, put the figure on the first screen. If you lose, decide what you will lead with before you touch the price. The rest of the online sale sits under e-commerce sales and marketing. If you want the listings rebuilt around those numbers, e-commerce and marketplace marketing is the service, and tell us what you need is the first step.

Questions

Questions owners ask.

Should I show a lab test report on the listing?
If you hold a report from an independent lab for the batch you are shipping, yes, and say which batch it covers. A report for an old batch, or one a buyer cannot match to the tub in the photograph, raises more questions than it answers. Keep the full document one tap away.
Can I compare my protein with a named competitor on the listing?
Naming a rival in a comparison is an advertising and legal question whose rules differ by body and change, so ask your adviser first. You rarely need the name. Compare against a typical scoop with the figures stated, and let the buyer hold it up against whatever tub they are considering.
Why do some buyers ask for the amino acid profile?
Some buyers worry that a protein figure has been raised with cheap added amino acids rather than whole protein. An amino acid profile from the label or a lab report answers them. If you have one, put it in the images; if a buyer asks and you have none, say so plainly.
Does flavour matter as much as protein content?
For the second tub it can matter more. A buyer reads the label once and reorders on whether they liked drinking it. Show flavour reviews by flavour, so a buyer looking at chocolate is not reading about mango, and offer small sachets if you can.

From the blog

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