---
title: "Mermaid Birthday Invitations — $12K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/mermaid-birthday-invitations"
last_updated: "2026-08-06T16:52:06.878Z"
locale: en
meta:
description: "Niche score 41/100 · $12K/yr market · 25K searches/yr · $8.75 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 41/100 · $12K/yr market · 25K searches/yr · $8.75 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Mermaid Birthday Invitations — $12K/yr Amazon US Niche (2026) - Flapen"
---
# **mermaid birthday invitations**
**Skip it**
Prices mostly outside the sweet spot ($5.31–$13.44) — this niche doesn't clear our bar today.
Market size 3Growth 25Conversion 62Competition 47Returns 77Price range 0Avg price 24Brand share 77Review moat 95Quality gap 18
**Review moat**
**Great****102.04**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Great****58%**
top-5 brand share — no brand owns this niche
**Returns**
**Great****1.9%**
return rate — above 5% kills the launch gate
**Conversion**
**Good****5.5%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Okay****57%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Bad****-0.9%**
90-day search growth — must beat 0% to launch
**Avg price**
**Bad****$8.75**
avg listing price — sweet spot $15–$100
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$12K**
$12K/yr · 25K searches
**Price range**
**Bad****$5.31–$13.44**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, mermaid birthday invitations is a $12K/yr Amazon United States market (25K searches/yr). The top 5 brands hold 58% of demand. Demand peaks in May–Sep. Verdict: Skip it — 41/100.
Data updated Jul 23, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **mermaid birthday invitations market data**
- **Units sold / yr**
- **2K–2K**
- avg 0–100/product
- **Revenue / yr**
- **$13K–$18K**
- units × avg price
- **Conversion rate**
- **5.5%**
- **Avg BSR**
- **#1,136**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **83%**
- **Out of stock**
- **17.7%**
- **Avg brand age**
- **29 months**
- **Avg seller age**
- **220 days**
## **Competition & brand share**
The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**21 **▲rising
**Sellers**
**26**
**Top-5 brand share**
**58%**
Top 20: 99%
**Top-5 click share**
**57%**
Top 20: 97%
**Open market**
**37%**
- Hotop26% - Soiceu13% - Putocopic8% - VAVINCI7% - HQLOW5% - PTECDROTS5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -0.9% search growth over the last 90 days.
1K750Spike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: May, Sep · busiest ÷ quietest = 2.9×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/mermaid-birthday-invitations/trend)
## **Top mermaid birthday invitations search terms**
- **mermaid birthday invitations**11K/yr+1.1%5.8% conv. - **mermaid invitations**5K/yr+19.4%4.2% conv. - **mermaid party invitations**3K/yr-11.3%4.8% conv. - **little mermaid birthday invitations**1K/yr+34.6%1.7% conv. - **little mermaid invitations**1K/yr+3.2%1.8% conv. - **mermaid invitations birthday party**3K/yr-56.2%6.1% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/mermaid-birthday-invitations/search-terms)
## **Top mermaid birthday invitations products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$1K20%$2K30%$4K40%$5K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 23 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Hotop 24 Sets Mermaid Birthday Invitations with Stickers and Envelopes for Kids Girls Mermaid Party Invitations Cards for Birthday Baby Shower Party Favors Supplies 4x6 Inch**Hotop**$8.01**4.8★744 rev](https://www.amazon.com/dp/B0B2RWXQZB) [2**Soiceu Cute Under the Sea Mermaid Birthday Party Invitations with Envelopes Set of 20 Purple Pink Girl Birthday Party Invites**Soiceu**$9.48**4.8★312 rev](https://www.amazon.com/dp/B0BQMXFFHD) [3**Putocopic Mermaid Girls Birthday Party Invitations Mermaid Birthday Invitations with Envelopes for Kids Birthday Party Pool Party 5x7 Inches**Putocopic**$12.35**4.6★64 rev](https://www.amazon.com/dp/B0D6HJ1C3C) [4**HQLOW Set of 20 Golden Glitter Mermaid Birthday Invitation Party Invitations for 1st Grils & Kids with Envelopes and Pieces Stickers Supplies for Sea Ocean Theme Birthday Partys Decorations -05**HQLOW**$5.31**4.7★9 rev](https://www.amazon.com/dp/B0F99GN2GN) [5**VAVINCI Mermaid Birthday Invitations 5th Birthday for Girls Kids Pink Mermaid Pool Party Invites 30 Sets with Envelopes**VAVINCI**$12.24**4.7★84 rev](https://www.amazon.com/dp/B0DQ4WP1MD)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**CWIOQPYI Birthday Invitations 20-Count 4x6 Mermaid Birthday Party Invitations with Envelopes for Girls Under the Sea Party Decorations Supplies - A08**CWIOQPYI**$10.23**2 rev4mo ago](https://www.amazon.com/dp/B0GRBKP7PR) [**Watercolor Mermaid Birthday Invitations Girl Party Invites with Envelopes**LYBHTTBD**$8.96**2 rev6mo ago](https://www.amazon.com/dp/B0GHD8X1VJ) [**Zgogy Blue Mermaid Birthday Party Invitations Splish-Splash Birthday Invitations Cards with Envelopes Celebration Invites Cards (20 Pack) Party Favors Decorations and Supplies -21**Zgogy**$9.18**2 rev6mo ago](https://www.amazon.com/dp/B0GGBYW64F) [**Zgogy Pink Mermaid Birthday Party Invitations Birthday Invitations Cards with Envelopes Celebration Invites Cards (20 Pack) Party Favors Decorations and Supplies -22**Zgogy**$7.88**3 rev6mo ago](https://www.amazon.com/dp/B0GGBTP5PX) [**Rwykg Mermaid Birthday Invitation Cards Under the Sea Birthday Invites 20 Party Invitations with 20 Envelopes Birthday Celebration Supplies 4x6 Double-sided Fill-in bday Invites for Girls**Rwykg**$10.11**0 rev6mo ago](https://www.amazon.com/dp/B0GCZY8N2K)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**CWIOQPYI Birthday Invitations 20-Count 4x6 Mermaid Birthday Party Invitations with Envelopes for Girls Under the Sea Party Decorations Supplies - A08**CWIOQPYI**$10.23**4.5★**▲ 278%**](https://www.amazon.com/dp/B0GRBKP7PR) [**Watercolor Mermaid Birthday Invitations Girl Party Invites with Envelopes**LYBHTTBD**$8.96**5.0★**▲ 202%**](https://www.amazon.com/dp/B0GHD8X1VJ) [**Zgogy Pink Mermaid Birthday Party Invitations Birthday Invitations Cards with Envelopes Celebration Invites Cards (20 Pack) Party Favors Decorations and Supplies -22**Zgogy**$7.88**4.6★**▲ 170%**](https://www.amazon.com/dp/B0GGBTP5PX) [**Bltgh Mermaid Tail Birthday Invitation Cards 20 Pack Party Invitations Cards with Envelopes For Birthday Mermaid Under the Sea Invitations for Girls Women Party Decorations Supplies (4x6)**Bltgh**$7.27**5.0★**▲ 148%**](https://www.amazon.com/dp/B0FN72TTSP) [**tranfvging Mermaid Birthday Party Invitations Under The Sea Birthday Invitations Cards With Envelopes Ocean Mermaid Tail Birthday Invites For Girls Kids Teens 25 Cards -d24**tranfvging**$6.09**4.8★**▲ 143%**](https://www.amazon.com/dp/B0DWSR2FFM)
**~~View all trending →~~**
## **What buyers say about mermaid birthday invitations**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**51%
*“Good quality”*
**Color**23%
*“Pretty”*
**Design-Overall**5%
*“They have a design that matches lots of mermaid decorations that are currently on the market”*
**Value For Money**5%
*“amount of invitations is such a great deal”*
**Writing Experience**5%
*“Plenty of room to write”*
**Paper Quality**3%
*“its thickness is perfect it isnt paper thin like others”*
**Thickness**2%
*“They are thick cardstock”*
**Durability**2%
*“a great durability”*
**Size-Overall**2%
*“These are a great size”*
**Gifting Purpose**2%
*“We are still very into handing out invitations so finding these for our mermaids 5th birthday was great”*
### **What buyers complain about **
**Size-Overall**100%
*“Cards dont fit in the envelopes”*
### **Top return reasons **
**Value For Money**33%
**Size-Overall**25%
**Advertised Vs Actual Product**8%
**Functionality-Overall**8%
**Charging**8%
**Thickness**8%
**Design-Overall**8%
## **Common questions**
- **Is mermaid birthday invitations profitable to sell on Amazon United States?**
- The niche generates $12K/yr across 23 tracked products. 0 of 6 products launched in the last 360 days are still selling. 90-day search growth is -0.9%. Flapen's verdict: Skip it (41/100).
- **How competitive is the mermaid birthday invitations niche?**
- 21 brands and 26 sellers compete. The top 5 products take 57% of clicks and top 5 brands hold 58% of demand.
- **What do buyers complain about in mermaid birthday invitations?**
- Top complaints mined from reviews: Size-Overall. The return rate is 1.9%.
- **When does demand for mermaid birthday invitations peak?**
- Demand peaks in May–Sep; the busiest month runs 2.9× the quietest.
- **What does it cost to enter the mermaid birthday invitations niche?**
- Listings span $5.31–$13.44; the average listing price is $8.75 (sweet spot $15–$100). The average incumbent carries 102 reviews — the moat a new listing must climb.
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