---
title: "Trend — oyster shell calcium 500mg - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/oyster-shell-calcium-500mg/trend"
last_updated: "2026-08-12T03:03:01.612Z"
locale: en
meta:
  description: "Niche score 47/100 · $80K/yr market · 32K searches/yr · $16.31 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:description": "Niche score 47/100 · $80K/yr market · 32K searches/yr · $16.31 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:title": "Trend — oyster shell calcium 500mg - Flapen"
---

# **oyster shell calcium 500mg**

**Skip it**

Brand-locked demand (top 5 brands take 97% of clicks) — this niche doesn't clear our bar today.

Market size 20Growth 42Conversion 97Competition 27Returns 100Price range 71Avg price 78Brand share 7Review moat 65Quality gap 21

**Returns**

**Incredible****0.0%**

return rate — above 5% kills the launch gate

**Conversion**

**Incredible****15.3%**

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

**Avg price**

**Great****$16.31**

avg listing price — sweet spot $15–$100

**Price range**

**Good****$7.00–$34.76**

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

**Review moat**

**Good****886.39**

avg incumbent reviews — the moat a new listing must climb

**Growth**

**Okay****+13.7%**

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

**Competition**

**Okay****69%**

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

**Quality gap**

**Bad****4.7★**

avg incumbent rating — lower means beatable quality

**Market size**

**Bad****$80K**

$80K/yr · 32K searches

**Brand share**

**Bad****97%**

top-5 brand share — brand-locked demand

## Trend