mermaid birthday invitations
Skip itPrices mostly outside the sweet spot ($5.31–$13.44) — this niche doesn't clear our bar today.
Review moat
Great102.04avg incumbent reviews — the moat a new listing must climb
Brand share
Great58%top-5 brand share — no brand owns this niche
Returns
Great1.9%return rate — above 5% kills the launch gate
Conversion
Good5.5%search→purchase rate — share of searches ending in a sale
Competition
Okay57%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$8.75avg listing price — sweet spot $15–$100
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Market size
Bad$12K$12K/yr · 25K searches
Price range
Bad$5.31–$13.44cheapest 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
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.Peak months: May, Sep · busiest ÷ quietest = 2.9×
Top mermaid birthday invitations search terms
- mermaid birthday invitations11K/yr
- mermaid invitations5K/yr
- mermaid party invitations3K/yr
- little mermaid birthday invitations1K/yr
- little mermaid invitations1K/yr
- mermaid invitations birthday party3K/yr
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.
All 23 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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$8.014.8★744 rev
Soiceu Cute Under the Sea Mermaid Birthday Party Invitations with Envelopes Set of 20 Purple Pink Girl Birthday Party Invites
Soiceu$9.484.8★312 rev
Putocopic Mermaid Girls Birthday Party Invitations Mermaid Birthday Invitations with Envelopes for Kids Birthday Party Pool Party 5x7 Inches
Putocopic$12.354.6★64 rev
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$5.314.7★9 rev
VAVINCI Mermaid Birthday Invitations 5th Birthday for Girls Kids Pink Mermaid Pool Party Invites 30 Sets with Envelopes
VAVINCI$12.244.7★84 rev
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$10.232 rev
Watercolor Mermaid Birthday Invitations Girl Party Invites with Envelopes
LYBHTTBD$8.962 rev
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$9.182 rev
Zgogy Pink Mermaid Birthday Party Invitations Birthday Invitations Cards with Envelopes Celebration Invites Cards (20 Pack) Party Favors Decorations and Supplies -22
Zgogy$7.883 rev
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$10.110 rev
Trending
90-day click momentumCWIOQPYI Birthday Invitations 20-Count 4x6 Mermaid Birthday Party Invitations with Envelopes for Girls Under the Sea Party Decorations Supplies - A08
CWIOQPYI$10.234.5★
Watercolor Mermaid Birthday Invitations Girl Party Invites with Envelopes
LYBHTTBD$8.965.0★
Zgogy Pink Mermaid Birthday Party Invitations Birthday Invitations Cards with Envelopes Celebration Invites Cards (20 Pack) Party Favors Decorations and Supplies -22
Zgogy$7.884.6★
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$7.275.0★
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$6.094.8★
What buyers say about mermaid birthday invitations
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality”
“Pretty”
“They have a design that matches lots of mermaid decorations that are currently on the market”
“amount of invitations is such a great deal”
“Plenty of room to write”
“its thickness is perfect it isnt paper thin like others”
“They are thick cardstock”
“a great durability”
“These are a great size”
“We are still very into handing out invitations so finding these for our mermaids 5th birthday was great”
What buyers complain about
“Cards dont fit in the envelopes”
Top return reasons
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.