---
title: "Reviews — vitamin d - Flapen"
canonical_url: "https://flapen.com/research/sa/health/vitamin-d/reviews"
last_updated: "2026-08-08T06:11:06.772Z"
locale: en
meta:
  description: "Niche score 44/100 · $329K/yr market · 216K searches/yr · $74.37 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:description": "Niche score 44/100 · $329K/yr market · 216K searches/yr · $74.37 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:title": "Reviews — vitamin d - Flapen"
---

# **vitamin d**

**Skip it**

Soft demand (-14.8% this quarter) — this niche doesn't clear our bar today.

Market size 52Growth 18Conversion 26Competition 27Returns 97Price range 49Avg price 84Brand share 44Review moat 25Quality gap 52

**Returns**

**Incredible****0.5%**

return rate — above 5% kills the launch gate

**Avg price**

**Great****$74.37**

avg listing price — sweet spot $15–$100

**Market size**

**Good****$329K**

$329K/yr · 216K searches

**Quality gap**

**Good****4.4★**

avg incumbent rating — lower means beatable quality

**Price range**

**Okay****$28.55–$174.42**

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

**Brand share**

**Okay****79%**

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

**Competition**

**Okay****69%**

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

**Conversion**

**Okay****2.1%**

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

**Review moat**

**Bad****4,887.47**

avg incumbent reviews — the moat a new listing must climb

**Growth**

**Bad****-14.8%**

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

**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=sa&signal=low_review_barrier "Top brand's reviews < 500") [** High Price**](https://flapen.com/research/niches?market=sa&signal=high_price "Avg price > $50")

## Reviews