boys halloween costumes 8-10
Skip itWeak search conversion (0.7%) — this niche doesn't clear our bar today.
Brand share
Incredible34%top-5 brand share — no brand owns this niche
Avg price
Incredible$31.38avg listing price — sweet spot $15–$100
Competition
Great28%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
Market size
Okay$245K$245K/yr · 1.1M searches
Review moat
Okay2,182.97avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Returns
Okay5.5%return rate — above 6% kills the launch gate
Growth
Bad-22.7%90-day search growth — must beat 0% to launch
Conversion
Bad0.7%search→purchase rate — share of searches ending in a sale
Competition
Clicks spread well past the top 5 (28% combined) — an open shelf where new products get seen.Brands
56 falling
Sellers
107
Top-5 brand share
34%
Open market
60%
- mcuaeddu9%
- Jazwares Costume Play7%
- Spooktacular Creations6%
- Teuevayl6%
- Marvel6%
- Jeowoqao6%
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 77 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
Teuevayl Boys Muscle Chest Dress up Costumes Trunk with Superhero Policeman Fireman Costume Kids Pretend Role Play Costumes Set Boys Dress up Clothes for Kids Ages 3 4 5 6 7
Teuevayl$33.634.5★1,120 rev
Jeowoqao Costumes for Kids Boys Dress up Clothes for Role Play Boys Muscle Chest Dress up Costumes with Policeman Fireman Costume for Toddler Boy 3 4 5 6 Years Christmas Birthday Gifts
Jeowoqao$28.794.4★87 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
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
Marvel Unisex Child Kids 2-piece Snug-fit Cotton Pajama Set Spider Costume 6 US
Marvel$13.733,269 rev
Spiderman Boys 2-Piece Snug-fit Cotton Holiday Pajama Set Soft & Cute for Kids MILES UNIFORM 6
Marvel$15.323,269 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 momentumSEHIOZNI Kids Funny Green Monster Onesie Silly Big Mouth Monster Cartoon Soft Plush One Piece (Purple 10-13 Years)
SEHIOZNI$24.024.2★
yfgkgkjg Unisex Kids Onesie Animal Pajamas One Piece Cosplay Costume Sleepwear Girls Boys Halloween Christmas (8-10Years)
yfgkgkjg$23.384.6★
mcuaeddu Demogorgon Onesie Halloween Costume Costume Warm Long Sleeve Costume (6-8 Years)
mcuaeddu$35.714.6★
Spiderman Boys 2-Piece Snug-fit Cotton Holiday Pajama Set Soft & Cute for Kids MILES UNIFORM 6
Marvel$15.324.7★
Elite Sports IBJJF Ultra Light BJJ Brazilian Jiu Jitsu Gi for Kids with Preshrunk Fabric and Free Belt (Black 1)
Elite Sports$43.464.8★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -22.7% search growth over the last 90 days.Peak months: Sep, Oct, Nov · busiest ÷ quietest = 57.0×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“A+ Quality”
“Fun for kids”
“Fit as expected”
“Cute Gift”
“Excellent value”
“As advertised”
“Easy to use”
“They are comfortable”
“Good material”
“bright lights”
What buyers complain about
“Little big”
“not well made”
“Breaks very easily”
“Poor material”
“Didnt work”
“The price is a little much”
“not able to recharge”
“Received used items”
“missing straps”
“Stitching is very poor quality”