---
title: "boys halloween costumes size 8-10 — Niche Verdict: Skip it (47/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/clothing-shoes-jewelry/boys-halloween-costumes-size-8-10"
last_updated: "2026-07-13T23:32:34.563Z"
locale: en
meta:
  description: "weak search conversion (0.6%) — boys halloween costumes size 8-10 doesn't clear our bar today."
  "og:description": "weak search conversion (0.6%) — boys halloween costumes size 8-10 doesn't clear our bar today."
  "og:title": "boys halloween costumes size 8-10 — Niche Verdict: Skip it (47/100) | Amazon United States - Flapen"
---

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# **boys halloween costumes size 8-10**

**Skip it**

Weak search conversion (0.6%) — this niche doesn't clear our bar today.

Market size 30Growth 14Conversion 7Competition 88Returns 28Price range 71Avg price 95Brand share 95Review moat 46Quality gap 33

**Brand share**

**Incredible****36%**

top-5 brand share — no brand owns this niche

**Avg price**

**Incredible****$32.95**

avg listing price — sweet spot $15–$100

**Competition**

**Great****27%**

top-5 click share — an open shelf

**Price range**

**Good****$6.54–$126.46**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Review moat**

**Okay****1,868.85**

avg incumbent reviews — the moat a new listing must climb

**Quality gap**

**Okay****4.5★**

avg incumbent rating — lower means beatable quality

**Market size**

**Okay****$133K**

$133K/yr · 683K searches

**Returns**

**Okay****5.6%**

return rate — above 6% kills the launch gate

**Growth**

**Bad****-21.6%**

90-day search growth — must beat 0% to launch

**Conversion**

**Bad****0.6%**

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.

0%3%$4K6%$8K9%$12K12%$16K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 68 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![mcuaeddu Demogorgon Onesie Halloween Costume Costume Warm Long Sleeve Costume (10-12 Years)](https://m.media-amazon.com/images/I/31DIb9Yt1oL.jpg)**mcuaeddu Demogorgon Onesie Halloween Costume Costume Warm Long Sleeve Costume (10-12 Years)**mcuaeddu**$36.83**4.6★169 rev](https://www.amazon.com/dp/B0GJNSYXH2) [2![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)](https://m.media-amazon.com/images/I/41rpKXZ9B4L.jpg)**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**$28.57**4.7★10,729 rev](https://www.amazon.com/dp/B075BLPK16) [3![Elite Sports IBJJF Ultra Light BJJ Brazilian Jiu Jitsu Gi for Kids with Preshrunk Fabric and Free Belt (Green 1)](https://m.media-amazon.com/images/I/51Z6EsED5wL.jpg)**Elite Sports IBJJF Ultra Light BJJ Brazilian Jiu Jitsu Gi for Kids with Preshrunk Fabric and Free Belt (Green 1)**Elite Sports**$44.22**4.8★5,654 rev](https://www.amazon.com/dp/B08B3ZFDKP) [4![inkArts Shark Blanket Hoodie - Adult Shark Sleeping Bag & Cozy Flannel Hoodie](https://m.media-amazon.com/images/I/419+3AHoJpL.jpg)**inkArts Shark Blanket Hoodie - Adult Shark Sleeping Bag & Cozy Flannel Hoodie**inkArts**$20.13**4.2★4,873 rev](https://www.amazon.com/dp/B0CH9TWC91) [5![Marvel Integrated Spider-Man Official Youth Deluxe Zentai Costume - Deluxe Two-Way Stretch Spandex with Invisible Zippers and Wrist Openings for Added Convenience (M)](https://m.media-amazon.com/images/I/41KUD7oYmML.jpg)**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**$42.56**4.5★1,853 rev](https://www.amazon.com/dp/B0BQRVG5BL)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![SEHIOZNI Kids Funny Green Monster Onesie Silly Big Mouth Monster Cartoon Soft Plush One Piece (Purple 10-13 Years)](https://m.media-amazon.com/images/I/413a8micUUL.jpg)**SEHIOZNI Kids Funny Green Monster Onesie Silly Big Mouth Monster Cartoon Soft Plush One Piece (Purple 10-13 Years)**SEHIOZNI**$24.02**14 rev1mo ago](https://www.amazon.com/dp/B0H3DBS5HF) [![Spiderman Boys 2-Piece Snug-fit Cotton Holiday Pajama Set Soft & Cute for Kids MILES UNIFORM 6](https://m.media-amazon.com/images/I/31Yxdxbam-L.jpg)**Spiderman Boys 2-Piece Snug-fit Cotton Holiday Pajama Set Soft & Cute for Kids MILES UNIFORM 6**Marvel**$15.32**3,269 rev2mo ago](https://www.amazon.com/dp/B0DDWD28DZ) [![Marvel Unisex Child Kids 2-piece Snug-fit Cotton Pajama Set Spider Costume 6 US](https://m.media-amazon.com/images/I/31m968xxPrL.jpg)**Marvel Unisex Child Kids 2-piece Snug-fit Cotton Pajama Set Spider Costume 6 US**Marvel**$13.73**3,269 rev2mo ago](https://www.amazon.com/dp/B09D4TTPNZ) [![Mistletoe unicorn Kids Flannel demogorgon Onesie Pajamas Black](https://m.media-amazon.com/images/I/41lSU2zYRaL.jpg)**Mistletoe unicorn Kids Flannel demogorgon Onesie Pajamas Black**Mistletoe unicorn**$29.78**75 rev3mo ago](https://www.amazon.com/dp/B0GSJWGV7R) [![LOYO Police Costume for Boys Kids Cop Outfit for Career Day Cosplay Pretend Play Police Officer Costume for Boys Ages 312 (5-7 Years)](https://m.media-amazon.com/images/I/51q0hRLjohL.jpg)**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**$27.54**16 rev5mo ago](https://www.amazon.com/dp/B0GJSRW4WR)

**~~View all new products →~~**

### **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](https://m.media-amazon.com/images/I/31yOovbsWCL.jpg)**Toddler Boys Purple Suits Ring Bearer Outfit Slim Fit Homecoming Dress Clothes 5 Pieces Baby Boy Formal Tuxedos Kids Suits Size 2T**YuanLu**$35.73**4.6★**▲ 920%**](https://www.amazon.com/dp/B078NNL3FN) [![Nabobs Unisex Animal Onesie Costume Flannel Halloween Cosplay Costume - Homewear Animal Outfit](https://m.media-amazon.com/images/I/41H1VZrd35L.jpg)**Nabobs Unisex Animal Onesie Costume Flannel Halloween Cosplay Costume - Homewear Animal Outfit**Nabobs**$15.29**4.7★**▲ 886%**](https://www.amazon.com/dp/B0FT7K6BKR) [![Mistletoe unicorn Kids Flannel demogorgon Onesie Pajamas Black](https://m.media-amazon.com/images/I/41lSU2zYRaL.jpg)**Mistletoe unicorn Kids Flannel demogorgon Onesie Pajamas Black**Mistletoe unicorn**$29.78**4.5★**▲ 875%**](https://www.amazon.com/dp/B0GSJWGV7R) [![SEHIOZNI Kids Funny Green Monster Onesie Silly Big Mouth Monster Cartoon Soft Plush One Piece (Purple 10-13 Years)](https://m.media-amazon.com/images/I/413a8micUUL.jpg)**SEHIOZNI Kids Funny Green Monster Onesie Silly Big Mouth Monster Cartoon Soft Plush One Piece (Purple 10-13 Years)**SEHIOZNI**$24.02**4.2★**▲ 870%**](https://www.amazon.com/dp/B0H3DBS5HF) [![Nabobs Unisex Animal Onesie Costume Flannel Halloween Cosplay Costume - Homewear Animal Outfit Sky-blue](https://m.media-amazon.com/images/I/41yOXApoOGL.jpg)**Nabobs Unisex Animal Onesie Costume Flannel Halloween Cosplay Costume - Homewear Animal Outfit Sky-blue**Nabobs**$11.93**4.7★**▲ 861%**](https://www.amazon.com/dp/B0FT7GRRXP)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — -21.6% search growth over the last 90 days.

300K200KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay

Peak months: Sep, Oct · busiest ÷ quietest = 158.1×

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Quality-Overall**18%

*“Amazing quality”*

**Fun/Entertainment Experience**15%

*“Fun for kids”*

**Size-Overall**13%

*“Fits good”*

**Value For Money**8%

*“Good value for the money”*

**Gifting Purpose**7%

*“Awesome gift”*

**Comfort-Overall**4%

*“is very comfortable”*

**Material Quality**3%

*“Material is soft”*

**Ease Of Use**3%

*“Easy to use”*

**Color**3%

*“Bright colors”*

**Advertised Vs Actual Product**2%

*“Works great, just as advertised”*

### **What buyers complain about **

**Size-Overall**19%

*“Pretty big”*

**Quality-Overall**18%

*“not well made”*

**Durability**11%

*“Breaks very easily”*

**Material Quality**4%

*“Not my favorite material”*

**Value For Money**3%

*“Feels slightly overpriced”*

**Stitch/Finish/Polish**3%

*“Stitching is very poor quality”*

**Strength**3%

*“Flimsy feeling”*

**Product Condition**2%

*“The item came used”*

**Strap/String Quality**2%

*“there is a bit of shedding of the strings”*

**Charging**2%

*“not able to recharge”*

### **Top return reasons **

**Size-Overall**68%

**Length**5%

**Advertised Vs Actual Product**4%

**Quality-Overall**3%

**Material Quality**3%

**Product Condition**2%

**Value For Money**2%

**Defective Material/Parts**2%

**Functionality-Overall**1%

**Sleeve Fit**1%