baby shark costume
Skip itWeak search conversion (0.7%) — this niche doesn't clear our bar today.
Avg price
Great$22.08avg listing price — sweet spot $15–$100
Competition
Great26%top-5 click share — an open shelf
Brand share
Great58%top-5 brand share — no brand owns this niche
Price range
Great$8.51–$36.72cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good998.04avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Growth
Bad-0.2%90-day search growth — must beat 0% to launch
Returns
Bad6.2%return rate — above 5% kills the launch gate
Market size
Bad$49K$49K/yr · 338K searches
Conversion
Bad0.7%search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United States niche tracking, baby shark costume is a $49K/yr Amazon United States market (338K searches/yr). The top 5 brands hold 58% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 44/100.
Data updated Jul 10, 2026 · scored weekly · How we score niches
baby shark costume market data
- Units sold / yr
- 3K–4K
- avg 100–250/product
- Revenue / yr
- $66K–$88K
- units × avg price
- Conversion rate
- 0.7%
- Avg BSR
- #6,162
- Page quality
- 0%
- Prime
- 94%
- Sponsored
- 73%
- Out of stock
- 8.2%
- Avg brand age
- 44 months
- Avg seller age
- 177 days
Competition & brand share
Clicks spread well past the top 5 (26% combined) — an open shelf where new products get seen.Brands
30 rising
Sellers
49
Top-5 brand share
58%
Top 20: 94%
Top-5 click share
26%
Top 20: 67%
Open market
36%
- HSCTEK26%
- ALLAIBB10%
- Markest8%
- Rubies8%
- Pinkfong6%
- Generic6%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -0.2% search growth over the last 90 days.Peak months: Sep, Oct · busiest ÷ quietest = 67.3×
Top baby shark costume search terms
- baby shark costume187K/yr
- baby shark onesie12K/yr
- baby shark halloween costume15K/yr
- baby shark costume 3t10K/yr
- baby shark costumes6K/yr
- baby shark costume 2t12K/yr
- baby shark costume toddler52K/yr
- baby shark costume 4t6K/yr
- toddler baby shark costume10K/yr
- baby shark toddler costume11K/yr
Top baby shark costume 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
Markest Onesie Unisex Adult Pajamas Animal Rose Red Shark Cosplay Costume Sleepwear L
Markest$24.104.4★1,881 rev
Rubies Baby Shark: Baby Shark Costume with Sound Chip for Toddlers Unisex Toddler
Rubies$24.504.5★5,047 rev
Shark Baby Costume Infant Animal Onesie Toddler Cosplay Boy Girl 69
HSCTEK$22.924.7★702 rev
ALLAIBB Baby Infant Shark Costumes Outfit Cotton Romper Cute Jumpsuit Hooded Outwear for Toddler Baby Boys Girls 3-24M
ALLAIBB$20.874.7★613 rev
Pinkfong Baby Shark Toddler Girls Glitter 2-Piece Knit Coverall and Headband Outfit Baby Shark Pink 3T
Pinkfong$19.324.7★334 rev
Newest
by launch date
XYJKIDSES Inflatable Shark Costume for Kids Funny Halloween Blow Up Costumes for Boys Girls Cosplay Party Suit (Blue Shark)
XYJKIDSES$36.7223 rev
3rd Birthday Baby Shark Shirt - 3 Year Old Outfit for Toddler Boy or Girl - Kids Party T-Shirt 4T Light Pink
Tstars$17.37664 rev
DILUFUN Baby Infant Boys Girls Shark Onesie Costume Toddler Halloween Cosplay Onesie Costume Funny Warm Dress Outfit 3-36months
DILUFUN$19.29192 rev
inflatable costume adult Blow Up Shark Costume For Halloween Birthday Gift Role Playing Game Party Costumes (Yellow)
Generic$20.83116 rev
inflatable costume adult Blow Up Shark Costume For Halloween Birthday Gift Role Playing Game Party Costumes (Rose Red)
Generic$20.82116 rev
Trending
90-day click momentum
HSCTEK Shark Onesie Costume Kids Baby Pajamas Cosplay Sleepwear Clothes 16
HSCTEK$29.174.6★
XYJKIDSES Inflatable Shark Costume for Kids Funny Halloween Blow Up Costumes for Boys Girls Cosplay Party Suit (Blue Shark)
XYJKIDSES$36.724.9★
3rd Birthday Baby Shark Shirt - 3 Year Old Outfit for Toddler Boy or Girl - Kids Party T-Shirt 4T Light Pink
Tstars$17.374.8★
LIOMENGZI Toddler Baby Boy Hooded Shark Summer Outfit Funny T-Shirt Shorts Set Infant Shark Clothes 6 12 18 Months 2T 3T(Blue Shark 12-18 Months)
LIOMENGZI$13.244.6★
inflatable costume adult Blow Up Shark Costume For Halloween Birthday Gift Role Playing Game Party Costumes (Rose Red)
Generic$20.824.6★
What buyers say about baby shark costume
What buyers praise and complain about, mined from review topics.What buyers love
“Great fun”
“Fit well”
“Great quality costume”
“comfortable”
“dont break either”
“Great costume at a fantastic price”
“warm amd thick baby love it”
“The material is flexible. not stiff or scratchy.”
“The shark is a patch that is nice and thick, and securely adhered”
“Exactly as described”
What buyers complain about
“It was small”
“I have bought this twice both times it has come with holes in it”
“Falling apart”
“the leg straps on the inside broke”
“Unfortunately, the overall construction feels extremely cheap”
“Heads up, it gets very hot”
“Its thin and cheap”
“Zipper broke on the first wash”
“All it did was make the entire load of laundry stink”
“A bit hard”
Top return reasons
Common questions
- Is baby shark costume profitable to sell on Amazon United States?
- The niche generates $49K/yr across 70 tracked products. 0 of 8 products launched in the last 360 days are still selling. 90-day search growth is -0.2%. Flapen's verdict: Skip it (44/100).
- How competitive is the baby shark costume niche?
- 30 brands and 49 sellers compete. The top 5 products take 26% of clicks and top 5 brands hold 58% of demand.
- What do buyers complain about in baby shark costume?
- Top complaints mined from reviews: Size-Overall, Gap/Hole, Durability. The return rate is 6.2% — above our launch gate.
- When does demand for baby shark costume peak?
- Demand peaks in Sep–Oct; the busiest month runs 67.3× the quietest.
- What does it cost to enter the baby shark costume niche?
- Listings span $8.51–$36.72; the average listing price is $22.08 (sweet spot $15–$100). The average incumbent carries 998 reviews — the moat a new listing must climb.