---
title: "Reviews — vitamin d3 k2 - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/vitamin-d3-k2/reviews"
last_updated: "2026-08-09T21:49:06.132Z"
locale: en
meta:
  description: "Niche score 65/100 · $31.2M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Aug 2026."
  "og:description": "Niche score 65/100 · $31.2M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Aug 2026."
  "og:title": "Reviews — vitamin d3 k2 - Flapen"
---

# **vitamin d3 k2**

**Worth a look**

Shows a $31.2M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 100Growth 24Conversion 96Competition 60Returns 100Price range 79Avg price 87Brand share 71Review moat 20Quality gap 18

**Market size**

**Incredible****$31.2M**

$31.2M/yr · 12.2M searches

**Returns**

**Incredible****0.0%**

return rate — above 5% kills the launch gate

**Conversion**

**Incredible****12.9%**

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

**Avg price**

**Great****$19.89**

avg listing price — sweet spot $15–$100

**Price range**

**Great****$8.71–$40.07**

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

**Brand share**

**Good****62%**

top-5 brand share — brands hold most of the demand

**Competition**

**Good****49%**

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

**Growth**

**Bad****-2.1%**

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

**Review moat**

**Bad****13,095.63**

avg incumbent reviews — the moat a new listing must climb

**Quality gap**

**Bad****4.7★**

avg incumbent rating — lower means beatable quality

**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")

## Reviews