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The best mass gainer from Zumub: 16 products by price per kg
The short answer. Of the 16 products that pass this filter, the highest scoring is Zumub Heavy Gainer 4Kg (2x 2Kg) from Zumub: €7.50/kg and verification level 1 out of 4. The selection runs from €7.50/kg to €71.50/kg, with a median of €22.50/kg.
The 16 mass gainer products sold by Zumub, scored with the same score as the rest of the site. Its median is €22.50/kg, 19 % above 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
Zumub Heavy Gainer 4Kg (2x 2Kg)
€7.50/kgNo third-party seal
€7.50 per kg: the cheapest of those that meet the category's requirements and are not underdosed.
Score 81 out of 100: the highest mark, with 35 % of the weight on price per kg.
At Zumub · see how its score breaks down
The full selection
16
products compared
from €7.50 to €71.50
per kg
0
at verified level 4
Filter and sort
| # | Product | Store | |||
|---|---|---|---|---|---|
| 01 | Zumub+€2.99 delivery | €29.99 | €7.50 /kg | 81 | |
| Zumub+€2.99 delivery | €15.99 | €8.00 /kg | 78 | ||
| Zumubfree delivery | €44.99 | €22.50 /kg | 57 | ||
| 02 | Zumubfree delivery | €43.98 | €8.80 /kg | 70 | |
| Zumub+€2.99 delivery | €11.99 | €9.99 /kg | 66 | ||
| 03 | Zumub+€2.99 delivery | €28.99 | €12.77 /kg | 67 | |
| 04 | Zumubfree delivery | €58.99 | €14.75 /kg | 64 | |
| Zumub+€2.99 delivery | €29.99 | €14.99 /kg | 64 | ||
| Zumubfree delivery | €87.90 | €43.95 /kg | 53 | ||
| 05 | Zumubfree delivery | €74.90 | €18.73 /kg | 61 | |
| Zumub+€2.99 delivery | €24.90 | €24.90 /kg | 57 | ||
| 06 | Zumubfree delivery | €64.99 | €23.89 /kg | 58 | |
| 07 | Zumubfree delivery | €98.99 | €24.75 /kg | 56 | |
| Zumubfree delivery | €54.99 | €27.50 /kg | 55 | ||
| Zumubfree delivery | €142.99 | €71.50 /kg | 50 | ||
| 08 | Reflex Instant Mass Heavyweight 2kg · 0/1 requirements | Zumubfree delivery | €44.99 | €22.50 /kg | 51 |
No product makes that cut
Out of the 16 in this table, none meets every filter that is currently set at the same time.
16 products in this table
Why one is cheaper than the other
Factor by factor, with both stores’ data
Zumub costs 19 % more per kg than All other stores (€22.50/kg against €18.98/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), different brands in the catalogue, products with declared additives.
| Factor | Zumub | All other stores |
|---|---|---|
| Pack size (median)All other stores 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 kg | 2.3 kg |
| Different brands in the catalogueZumub mostly sells one brand, Zumub: 56 % of its catalogue in this category. All other stores spreads its own across 51 brands. A store selling its own brand skips the manufacturer’s margin and can cut the price without touching the formula; a reseller pays that margin and passes it on, and in exchange carries brands the other does not sell. | 6 (56 % Zumub) | 51 (6 % Prozis) |
| 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. | 50 % | 8 % |
| Median rating at the storeBased on 2,772 reviews at Zumub and 2,006 at All other stores. These are the store’s own ratings, which is judge and party: they help spot a product that arrives damaged or tastes awful, not decide which formula is better. | 4/5 | 4.6/5 |
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?
- Zumub Heavy Gainer 4Kg (2x 2Kg) from Zumub, with 81 points out of 100 at €7.50/kg. The 16 mass gainer products sold by Zumub, scored with the same score as the rest of the site. Its median is €22.50/kg, 19 % above the median of the 12 stores compared (€18.98/kg).
- Which is the cheapest per kg?
- Zumub Heavy Gainer 4Kg (2x 2Kg) from Zumub, at €7.50/kg (4000 g pack for €29.99). It is at verification level 1 out of 4: price is only 35 % of the mark.
- How was this selection made?
- The 16 mass gainer products sold by Zumub, scored with the same score as the rest of the site. Its median is €22.50/kg, 19 % above 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.
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