---
title: "Products — mass gainer"
canonical_url: "https://flapen.com/research/us/health-household/mass-gainer/products"
last_updated: "2026-08-12T14:52:10.152Z"
locale: en
meta:
  description: "Amazon product research for mass gainer: $472K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
  "og:description": "Amazon product research for mass gainer: $472K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
  "og:title": "Products — mass gainer"
---

# **Mass Gainer**

**Launch it**

A $5.7M/yr market growing +1.7% this quarter with returns at 0.0% — clears our launch bar.

Market size 98Growth 27Conversion 49Competition 36Returns 100Price range 95Avg price 92Brand share 13Review moat 22Quality gap 57

**Returns**

**Incredible****0.0%**

return rate — above 5% kills the launch gate

**Market size**

**Incredible****$5.7M**

$5.7M/yr · 2.7M searches

**Price range**

**Incredible****$23.31–$78.68**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Avg price**

**Great****$54.04**

avg listing price — sweet spot $15–$100

**Quality gap**

**Good****4.4★**

avg incumbent rating — lower means beatable quality

**Conversion**

**Okay****3.9%**

search→purchase rate — share of searches ending in a sale

**Competition**

**Okay****63%**

top-5 click share — leaders hold, buyers still browse

**Growth**

**Okay****+1.7%**

90-day search growth — must beat 0% to launch

**Review moat**

**Bad****8,692.94**

avg incumbent reviews — the moat a new listing must climb

**Brand share**

**Bad****95%**

top-5 brand share — brand-locked demand

**Signals**[** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")

## Products