baby shark costume adults
Skip itHigh returns (12.0%) — this niche doesn't clear our bar today.
Avg price
Incredible$27.35avg listing price — sweet spot $15–$100
Price range
Incredible$15.24–$47.98cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great432.14avg incumbent reviews — the moat a new listing must climb
Competition
Great38%top-5 click share — an open shelf
Growth
Good+28.6%90-day search growth — must beat 0% to launch
Brand share
Okay76%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Conversion
Okay2.2%search→purchase rate — share of searches ending in a sale
Market size
Bad$30K$30K/yr · 51K searches
Returns
Bad12.0%return rate — above 5% kills the launch gate
According to Flapen's Amazon United States niche tracking, baby shark costume adults is a $30K/yr Amazon United States market (51K searches/yr). The top 5 brands hold 76% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 47/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
baby shark costume adults market data
- Units sold / yr
- 1K–1K
- avg 0–100/product
- Revenue / yr
- $27K–$34K
- units × avg price
- Conversion rate
- 2.2%
- Avg BSR
- #17,216
- Page quality
- 0%
- Prime
- 95%
- Sponsored
- 93%
- Out of stock
- 13.4%
- Avg brand age
- 42 months
- Avg seller age
- 176 days
Competition & brand share
Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen.Brands
23 rising
Sellers
32
Top-5 brand share
76%
Top 20: 98%
Top-5 click share
38%
Top 20: 82%
Open market
19%
- Generic40%
- vavalad13%
- Markest10%
- dressfan8%
- Poptrend5%
- HSCTEK5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +28.6% search growth over the last 90 days.Peak months: Sep, Oct · busiest ÷ quietest = 13.1×
Top baby shark costume adults search terms
- baby shark costume adult15K/yr
- baby shark inflatable costume4K/yr
- baby shark adult costume6K/yr
- baby shark inflatable3K/yr
- adult baby shark costume4K/yr
- daddy shark costume11K/yr
- daddy shark costume adult7K/yr
Top baby shark costume adults 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
inflatable costume adult Blow Up Shark Costume For Halloween Birthday Gift Role Playing Game Party Costumes (Rose Red)
Generic$20.894.6★117 rev
dressfan Animal Shark Onesie Cosplay Costume Christmas Halloween Pajamas for Unisex Adults Teens Kids Rose M
dressfan$20.364.4★1,459 rev
Inflatable Costume Adult Blow Up Shark Costume For Halloween Birthday Gift Role Playing Game Party Costumes (YELLOW)
Generic$21.164.1★8 rev
Markest Onesie Unisex Adult Pajamas Animal Rose Red Shark Cosplay Costume Sleepwear L
Markest$24.104.4★1,882 rev
inflatable costume adult Blow Up Shark Costume For Halloween Birthday Gift Role Playing Game Party Costumes (Yellow)
Generic$20.824.6★117 rev
Newest
by launch dateInflatable Costume Adult Blow Up Shark Costume For Halloween Birthday Gift Role Playing Game Party Costumes (YELLOW)
Generic$21.168 rev
Inflatable Costume Adult Blow Up Shark Costume For Halloween Birthday Gift Role Playing Game Party Costumes (BLUE)
Generic$23.358 rev
Inflatable Costume Adult Blow Up Shark Costume For Halloween Birthday Gift Role Playing Game Party Costumes (ROSE RED)
Generic$21.568 rev
WEQJC Adult Onesie Pajamas Halloween Costume One-Piece Slim Fit Sleepwear Cosplay Suit for Mens Womens(Hammerhead Shark Large)
WEQJC$15.73194 rev
Poptrend Couples Inflatable Shark Costume for Adults Funny Halloween Blow Up Costumes His and Hers Cosplay Duo Costumes 2 Packs
Poptrend$45.9788 rev
Trending
90-day click momentumInflatable Costume Adult Blow Up Shark Costume For Halloween Birthday Gift Role Playing Game Party Costumes (ROSE RED)
Generic$21.564.1★
Infant Shark Bunting Costume - Hooded Bunting with Fin-Shaped Sleeves and Soft Sculpted Eyes
Fun Costumes$39.435.0★
JUOLOET Unisex Adult Onesie Pajamas Shark Animal One Piece Snug Fit Halloween Costume Sleepwear Homewear Shark Small
JUOLOET$29.974.6★
inflatable costume adult Blow Up Shark Costume For Halloween Birthday Gift Role Playing Game Party Costumes (Rose Red)
Generic$20.894.6★
WEQJC Adult Onesie Pajamas Halloween Costume One-Piece Slim Fit Sleepwear Cosplay Suit for Mens Womens(Hammerhead Shark Large)
WEQJC$15.734.5★
What buyers say about baby shark costume adults
What buyers praise and complain about, mined from review topics.What buyers love
“Great quality costume”
“fits well,”
“It's fun for the whole family”
“Great costume at a fantastic price”
“Better than expected”
“It is so comfortable”
“Good quality, durable”
“Easy to put on and fill, and literally fits all shapes and sizes”
“Very easy to pit on and inflate”
“warm”
What buyers complain about
“Short”
“Rips easily and my daughter didnt even get a full 24 hrs without it ripping”
“the leg straps on the inside broke”
“Broken zipper”
“not for all heights”
“reading instructions ahead of time”
“This has clearly been used”
“Heads up, it gets very hot”
“Looked cheap”
“I wish they depicted these features”
Top return reasons
Common questions
- Is baby shark costume adults profitable to sell on Amazon United States?
- The niche generates $30K/yr across 43 tracked products. 0 of 7 products launched in the last 360 days are still selling. 90-day search growth is +28.6%. Flapen's verdict: Skip it (47/100).
- How competitive is the baby shark costume adults niche?
- 23 brands and 32 sellers compete. The top 5 products take 38% of clicks and top 5 brands hold 76% of demand.
- What do buyers complain about in baby shark costume adults?
- Top complaints mined from reviews: Size-Overall, Durability, Strap/String Quality. The return rate is 12.0% — above our launch gate.
- When does demand for baby shark costume adults peak?
- Demand peaks in Sep–Oct; the busiest month runs 13.1× the quietest.
- What does it cost to enter the baby shark costume adults niche?
- Listings span $15.24–$47.98; the average listing price is $27.35 (sweet spot $15–$100). The average incumbent carries 432 reviews — the moat a new listing must climb.