---
title: "Reviews — 21st birthday plates - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/21st-birthday-plates/reviews"
last_updated: "2026-08-09T19:23:52.542Z"
locale: en
meta:
  description: "Niche score 54/100 · $70K/yr market · 79K searches/yr · $12.10 avg price. A small market ($70K/yr) keeps it on the watch list. Data updated Jul 2026."
  "og:description": "Niche score 54/100 · $70K/yr market · 79K searches/yr · $12.10 avg price. A small market ($70K/yr) keeps it on the watch list. Data updated Jul 2026."
  "og:title": "Reviews — 21st birthday plates - Flapen"
---

# **21st birthday plates**

**Worth a look**

Shows a fragmented shelf (top 5 take 19% of clicks), but a small market ($70K/yr) keeps it on the watch list.

Market size 17Growth 29Conversion 76Competition 95Returns 45Price range 49Avg price 51Brand share 93Review moat 92Quality gap 21

**Competition**

**Incredible****19%**

top-5 click share — an open shelf

**Brand share**

**Great****42%**

top-5 brand share — no brand owns this niche

**Review moat**

**Great****169.09**

avg incumbent reviews — the moat a new listing must climb

**Conversion**

**Great****7.3%**

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

**Avg price**

**Good****$12.10**

avg listing price — sweet spot $15–$100

**Price range**

**Okay****$4.73–$24.99**

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

**Returns**

**Okay****3.4%**

return rate — above 5% kills the launch gate

**Growth**

**Okay****+3.2%**

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

**Quality gap**

**Bad****4.7★**

avg incumbent rating — lower means beatable quality

**Market size**

**Bad****$70K**

$70K/yr · 79K searches

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

## Reviews