costumes for boys 8-10
Skip itA small market ($9K/yr) — this niche doesn't clear our bar today.
Growth
Incredible+122.9%90-day search growth — must beat 0% to launch
Avg price
Incredible$31.66avg listing price — sweet spot $15–$100
Price range
Incredible$20.14–$42.69cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Okay2,081avg incumbent reviews — the moat a new listing must climb
Brand share
Okay81%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Competition
Bad78%top-5 click share — a locked-up shelf
Returns
Bad8.1%return rate — above 5% kills the launch gate
Market size
Bad$9K$9K/yr · 154K searches
Conversion
Bad0.2%search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United States niche tracking, costumes for boys 8-10 is a $9K/yr Amazon United States market (154K searches/yr). The top 5 brands hold 81% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 38/100.
Data updated Jul 31, 2026 · scored weekly · How we score niches
costumes for boys 8-10 market data
- Units sold / yr
- 750–1K
- avg 0–100/product
- Revenue / yr
- $24K–$32K
- units × avg price
- Conversion rate
- 0.2%
- Avg BSR
- #3,024
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 80%
- Out of stock
- 13.3%
- Avg brand age
- 38 months
- Avg seller age
- 166 days
Competition & brand share
The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.Brands
8 falling
Sellers
13
Top-5 brand share
81%
Top 20: 100%
Top-5 click share
78%
Top 20: 100%
Open market
13%
- mcuaeddu30%
- inkArts24%
- Spooktacular Creations11%
- Gootus8%
- Corespe8%
- yfgkgkjg7%
- Open — no brand owns it (2 brands, 13%)
Demand & seasonality
Weekly Amazon search volume, last 87 weeks — +122.9% search growth over the last 90 days.Peak months: Sep, Oct · busiest ÷ quietest = 191.6×
Top costumes for boys 8-10 search terms
- boy halloween costumes 6-858K/yr
- costumes for boys 8-1020K/yr
- halloween costumes for boys 8-1052K/yr
- halloween costumes for boys 6-724K/yr
- boy halloween costumes 4-6799/yr
Top costumes for boys 8-10 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 10 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 (6-8 Years)
mcuaeddu$35.614.5★174 rev
inkArts Shark Blanket Hoodie - Adult Shark Sleeping Bag & Cozy Flannel Hoodie
inkArts$20.144.3★4,817 rev
Led Mask Halloween Costume Mask with Gesture Sensing Kids Toys Gifts
Gootus$27.694.6★535 rev
Corespe Kids Dragon Costume Set with Tail and Mask Boys Halloween Dragon Cosplay Dress Up Outfits (Blue Medium(8-10 Years))
Corespe$31.554.5★119 rev
yfgkgkjg Unisex Kids Onesie Animal Pajamas One Piece Cosplay Costume Sleepwear Girls Boys Halloween Christmas (8-10Years)
yfgkgkjg$23.254.6★750 rev
Newest
by launch datemcuaeddu Demogorgon Onesie Halloween Costume Costume Warm Long Sleeve Costume (6-8 Years)
mcuaeddu$35.61174 rev
mcuaeddu Demogorgon Onesie Halloween Costume Costume Warm Long Sleeve Costume (8-10 Years)
mcuaeddu$36.31174 rev
Corespe Kids Dragon Costume Set with Tail and Mask Boys Halloween Dragon Cosplay Dress Up Outfits (Blue Medium(8-10 Years))
Corespe$31.55119 rev
Led Mask Halloween Costume Mask with Gesture Sensing Kids Toys Gifts
Gootus$27.69535 rev
Metemot Kids Army Costume for Boys Military Army Costume with Army Toys Solider Boy Dress up Halloween Costumes for Boys
Metemot$38.13231 rev
Trending
90-day click momentumyfgkgkjg Unisex Kids Onesie Animal Pajamas One Piece Cosplay Costume Sleepwear Girls Boys Halloween Christmas (8-10Years)
yfgkgkjg$23.254.6★
mcuaeddu Demogorgon Onesie Halloween Costume Costume Warm Long Sleeve Costume (6-8 Years)
mcuaeddu$35.614.5★
mcuaeddu Demogorgon Onesie Halloween Costume Costume Warm Long Sleeve Costume (8-10 Years)
mcuaeddu$36.314.5★
inkArts Shark Blanket Hoodie - Adult Shark Sleeping Bag & Cozy Flannel Hoodie
inkArts$20.144.3★
Corespe Kids Dragon Costume Set with Tail and Mask Boys Halloween Dragon Cosplay Dress Up Outfits (Blue Medium(8-10 Years))
Corespe$31.554.5★
What buyers say about costumes for boys 8-10
What buyers praise and complain about, mined from review topics.What buyers love
“Amazing quality”
“Very soft and cozy for my 12 year old daughter who got a Medium”
“Fits perfect”
“Makes a fun gift”
“comfortable”
“Exactly as described”
“Great buy”
“Easy to use”
“cozy for year round use”
“The material feels nice on the skin, and it is perfect for relaxing, sleeping, or just having fun”
What buyers complain about
“runs small”
“it kept tearing”
“not well made”
“The description says nothing about the item being used”
“The material was very cheap”
“The stitching is poor”
“Holes in it”
“This is extremely cheap for the price”
“Gun is loud”
“I understand the material isnt very thick”
Top return reasons
Common questions
- Is costumes for boys 8-10 profitable to sell on Amazon United States?
- The niche generates $9K/yr across 10 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is +122.9%. Flapen's verdict: Skip it (38/100).
- How competitive is the costumes for boys 8-10 niche?
- 8 brands and 13 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 81% of demand.
- What do buyers complain about in costumes for boys 8-10?
- Top complaints mined from reviews: Size-Overall, Durability, Quality-Overall. The return rate is 8.1% — above our launch gate.
- When does demand for costumes for boys 8-10 peak?
- Demand peaks in Sep–Oct; the busiest month runs 191.6× the quietest.
- What does it cost to enter the costumes for boys 8-10 niche?
- Listings span $20.14–$42.69; the average listing price is $31.66 (sweet spot $15–$100). The average incumbent carries 2,081 reviews — the moat a new listing must climb.