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The best mass gainer from Amazon: 40 products by price per kg
The short answer. Of the 40 products that pass this filter, the highest scoring is MASmusculo Gainer Mass Formula from Amazon: €12.17/kg and verification level 2 out of 4. The cheapest per kg is Scientiffic Nutrition Brutal Impact, Ganador de Peso y Masa Muscular, Mass Gainer con Carbohidratos, Proteina de Suero y Aminoácidos como la Creatina from Amazon, at €10.96/kg. The selection runs from €10.96/kg to €469.01/kg, with a median of €18.75/kg.
The 40 mass gainer products sold by Amazon, scored with the same score as the rest of the site. Its median is €18.75/kg, 1 % below the median of the 12 stores compared (€18.98/kg).
† Some links are affiliate links — they do not change the ranking
Some store links are affiliate links: if you buy through them, this site may earn a commission at no extra cost to you. It changes nothing in the ranking: the score is computed beforehand and without reading those links, and products with no affiliate programme appear exactly the same. How it is calculated.
The three that stand out
Scientiffic Nutrition Brutal Impact · Ganador de Peso y Masa Muscular · 3 kg
€10.96/kgNo third-party seal
€10.96 per kg: the cheapest of those that meet the category's requirements and are not underdosed.
At Amazon · see how its score breaks down
MASmusculo Gainer Mass Formula
€12.17/kgClaimed
Score 70 out of 100: the highest mark, with 35 % of the weight on price per kg.
At Amazon · see how its score breaks down
The full selection
40
products compared
from €10.96 to €469.01
per kg
0
at verified level 4
Filter and sort
| # | Product | Store | |||
|---|---|---|---|---|---|
| 01 | Amazonfree delivery | €36.50 | €12.17 /kg | 70 | |
| 02 | Amazonfree delivery from €35 | €32.89 | €10.96 /kg | 69 | |
| 03 | Amazonfree delivery | €44.99 | €15.29 /kg | 65 | |
| 04 | Amazonfree delivery | €46.00 | €15.63 /kg | 65 | |
| 05 | Amazonfree delivery | €39.50 | €13.17 /kg | 65 | |
| 06 | Amazonfree delivery from €35 | €20.16 | €13.44 /kg | 64 | |
| 07 | Amazonfree delivery | €37.00 | €13.70 /kg | 64 | |
| 08 | Amazonfree delivery | €42.90 | €14.30 /kg | 63 | |
| 09 | Amazonfree delivery | €39.90 | €14.67 /kg | 63 | |
| Amazonfree delivery from €35 | €19.99 | €19.99 /kg | 58 | ||
| 10 | Amazonfree delivery | €37.99 | €15.20 /kg | 62 | |
| 11 | Amazonfree delivery | €37.99 | €15.20 /kg | 62 | |
| 12 | Amazonfree delivery | €72.99 | €15.37 /kg | 62 | |
| 13 | Amazonfree delivery | €39.99 | €16.00 /kg | 61 | |
| 14 | Amazonfree delivery from €35 | €17.08 | €17.08 /kg | 60 | |
| 15 | Amazonfree delivery | €43.99 | €17.60 /kg | 60 | |
| 16 | Amazonfree delivery | €43.99 | €17.60 /kg | 60 | |
| 17 | Amazonfree delivery from €35 | €26.89 | €17.93 /kg | 59 | |
| 18 | Amazonfree delivery | €40.89 | €18.01 /kg | 59 | |
| 19 | Amazonfree delivery | €47.93 | €18.02 /kg | 59 | |
| 20 | Amazonfree delivery | €54.09 | €18.03 /kg | 59 | |
| 21 | Amazonfree delivery | €37.50 | €18.75 /kg | 59 | |
| 22 | Amazonfree delivery from €35 | €18.98 | €18.98 /kg | 59 | |
| 23 | Amazonfree delivery | €39.90 | €19.95 /kg | 58 | |
| 24 | Amazonfree delivery | €59.99 | €20.00 /kg | 58 | |
| 25 | Amazonfree delivery | €63.90 | €21.30 /kg | 57 | |
| 26 | Maxler Mega Gainer · 3 flavours | Amazonfree delivery from €35 | €21.39 | €21.39 /kg | 57 |
| 27 | Amazonfree delivery from €35 | €21.90 | €21.90 /kg | 57 | |
| 28 | Amazonfree delivery from €35 | €32.95 | €21.97 /kg | 57 | |
| 29 | Amazonfree delivery from €35 | €29.50 | €24.58 /kg | 55 | |
| 30 | Amazonfree delivery from €35 | €24.99 | €24.99 /kg | 55 | |
| 31 | Amazonfree delivery from €35 | €25.45 | €25.45 /kg | 55 | |
| 32 | Amazonfree delivery from €35 | €34.90 | €26.44 /kg | 55 | |
| 33 | Amazonfree delivery | €68.00 | €27.20 /kg | 54 | |
| 34 | Amazonfree delivery from €35 | €19.99 | €28.56 /kg | 54 | |
| 35 | Amazonfree delivery | €42.90 | €42.90 /kg | 51 | |
| 36 | Amazonfree delivery from €35 | €15.99 | €190.36 /kg | 46 | |
| 37 | Amazonfree delivery from €35 | €15.99 | €197.41 /kg | 46 | |
| 38 | Amazonfree delivery | €37.99 | €452.26 /kg | 45 | |
| Amazonfree delivery | €37.99 | €469.01 /kg | 45 |
No product makes that cut
Out of the 40 in this table, none meets every filter that is currently set at the same time.
40 products in this table
Why one is cheaper than the other
Factor by factor, with both stores’ data
All other stores costs 6 % more per kg than Amazon (€19.87/kg against €18.75/kg, medians of both catalogues). That difference does not come out of nowhere. These are the data that explain it, with each store’s figure alongside: pack size (median), products with declared additives.
| Factor | Amazon | All other stores |
|---|---|---|
| Pack size (median)Amazon sells bigger packs, and a big pack spreads the same tub, the same label and the same shipping over more kilos. Part of the price gap per kg is this and not a discount: comparing one store’s small pack with the other’s large one inflates the gap. | 2.3 kg | 2.3 kg |
| Products with declared additivesWhat the pages of both declare: artificial sweeteners, colourings. An additive is not fraud, but it takes up grams that are not active ingredient and is cheaper than the active ingredient: where more additive is declared, the price per kg drops without the product being better. | 0 % | 25 % |
None of these factors is an accusation. They are medians of what each store publishes on its pages on the day prices were collected: where a page does not declare a figure, that store does not count in that row instead of counting as a zero. A specific product can contradict its store’s median, and that is what the full table is for. How all of this is calculated.
This is a filter, not another ranking. The score that sorts this table is exactly the same as in the full mass gainer comparison: the only thing removed here is the products that do not meet the criterion above. How it is calculated.
Questions about this mass gainer selection
Answered with the data on this page
- Which is the best mass gainer in this selection?
- MASmusculo Gainer Mass Formula from Amazon, with 70 points out of 100 at €12.17/kg. The 40 mass gainer products sold by Amazon, scored with the same score as the rest of the site. Its median is €18.75/kg, 1 % below the median of the 12 stores compared (€18.98/kg).
- Which is the cheapest per kg?
- Scientiffic Nutrition Brutal Impact, Ganador de Peso y Masa Muscular, Mass Gainer con Carbohidratos, Proteina de Suero y Aminoácidos como la Creatina from Amazon, at €10.96/kg (3000 g pack for €32.89). It is at verification level 1 out of 4: price is only 35 % of the mark.
- How was this selection made?
- The 40 mass gainer products sold by Amazon, scored with the same score as the rest of the site. Its median is €18.75/kg, 1 % below the median of the 12 stores compared (€18.98/kg). The order within the table is the usual score: 35 % price per kg against the cheapest in the category, 35 % verifiable quality (certification, purity and additives), 20 % the category's own requirements and 10 % the buyers' rating at the store. Affiliate links do not enter the calculation. Prices collected on October 15, 2026.
Other ways to look at mass gainer
Same dataset, another question