boys halloween costumes size 8-10
Skip itWeak search conversion (0.6%) — this niche doesn't clear our bar today.
Brand share
Incredible36%top-5 brand share — no brand owns this niche
Avg price
Incredible$32.95avg listing price — sweet spot $15–$100
Competition
Great27%top-5 click share — an open shelf
Price range
Good$6.54–$126.46cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Okay1,868.85avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Market size
Okay$133K$133K/yr · 683K searches
Returns
Okay5.6%return rate — above 6% kills the launch gate
Growth
Bad-21.6%90-day search growth — must beat 0% to launch
Conversion
Bad0.6%search→purchase rate — share of searches ending in a sale
Competition
Clicks spread well past the top 5 (27% combined) — an open shelf where new products get seen.Brands
50 flat
Sellers
96
Top-5 brand share
36%
Open market
60%
- mcuaeddu9%
- Jazwares Costume Play8%
- Marvel6%
- Elite Sports6%
- Spooktacular Creations6%
- inkArts4%
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 68 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
mcuaeddu Demogorgon Onesie Halloween Costume Costume Warm Long Sleeve Costume (10-12 Years)
mcuaeddu$36.834.6★169 rev
Spooktacular Creations Halloween Ninja Costume Black Ninja Outfit Set for Kids Halloween Costumes with Accessories for Boys Dress Up and Role Play Party (Small 5-7 yrs)
Spooktacular Creations$28.574.7★10,729 rev
Elite Sports IBJJF Ultra Light BJJ Brazilian Jiu Jitsu Gi for Kids with Preshrunk Fabric and Free Belt (Green 1)
Elite Sports$44.224.8★5,654 rev
inkArts Shark Blanket Hoodie - Adult Shark Sleeping Bag & Cozy Flannel Hoodie
inkArts$20.134.2★4,873 rev
Marvel Integrated Spider-Man Official Youth Deluxe Zentai Costume - Deluxe Two-Way Stretch Spandex with Invisible Zippers and Wrist Openings for Added Convenience (M)
Jazwares Costume Play$42.564.5★1,853 rev
Newest
by launch date
SEHIOZNI Kids Funny Green Monster Onesie Silly Big Mouth Monster Cartoon Soft Plush One Piece (Purple 10-13 Years)
SEHIOZNI$24.0214 rev
Spiderman Boys 2-Piece Snug-fit Cotton Holiday Pajama Set Soft & Cute for Kids MILES UNIFORM 6
Marvel$15.323,269 rev
Marvel Unisex Child Kids 2-piece Snug-fit Cotton Pajama Set Spider Costume 6 US
Marvel$13.733,269 rev
Mistletoe unicorn Kids Flannel demogorgon Onesie Pajamas Black
Mistletoe unicorn$29.7875 rev
LOYO Police Costume for Boys Kids Cop Outfit for Career Day Cosplay Pretend Play Police Officer Costume for Boys Ages 312 (5-7 Years)
LOYO$27.5416 rev
Trending
90-day click momentum
Toddler Boys Purple Suits Ring Bearer Outfit Slim Fit Homecoming Dress Clothes 5 Pieces Baby Boy Formal Tuxedos Kids Suits Size 2T
YuanLu$35.734.6★
Nabobs Unisex Animal Onesie Costume Flannel Halloween Cosplay Costume - Homewear Animal Outfit
Nabobs$15.294.7★
Mistletoe unicorn Kids Flannel demogorgon Onesie Pajamas Black
Mistletoe unicorn$29.784.5★
SEHIOZNI Kids Funny Green Monster Onesie Silly Big Mouth Monster Cartoon Soft Plush One Piece (Purple 10-13 Years)
SEHIOZNI$24.024.2★
Nabobs Unisex Animal Onesie Costume Flannel Halloween Cosplay Costume - Homewear Animal Outfit Sky-blue
Nabobs$11.934.7★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -21.6% search growth over the last 90 days.Peak months: Sep, Oct · busiest ÷ quietest = 158.1×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Amazing quality”
“Fun for kids”
“Fits good”
“Good value for the money”
“Awesome gift”
“is very comfortable”
“Material is soft”
“Easy to use”
“Bright colors”
“Works great, just as advertised”
What buyers complain about
“Pretty big”
“not well made”
“Breaks very easily”
“Not my favorite material”
“Feels slightly overpriced”
“Stitching is very poor quality”
“Flimsy feeling”
“The item came used”
“there is a bit of shedding of the strings”
“not able to recharge”