---
title: "Demon Slayer Costume for Kids — $31K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/demon-slayer-costume-for-kids"
last_updated: "2026-08-11T17:20:36.670Z"
locale: en
meta:
description: "Niche score 45/100 · $31K/yr market · 113K searches/yr · $36.92 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 45/100 · $31K/yr market · 113K searches/yr · $36.92 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Demon Slayer Costume for Kids — $31K/yr Amazon US Niche (2026) - Flapen"
---
# **demon slayer costume for kids**
**Skip it**
A small market ($31K/yr) — this niche doesn't clear our bar today.
Market size 8Growth 26Conversion 9Competition 77Returns 15Price range 95Avg price 95Brand share 82Review moat 91Quality gap 37
**Avg price**
**Incredible****$36.92**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$18.13–$69.79**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Great****187.9**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Great****53%**
top-5 brand share — no brand owns this niche
**Competition**
**Great****38%**
top-5 click share — an open shelf
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Growth**
**Okay****+0.8%**
90-day search growth — must beat 0% to launch
**Returns**
**Bad****7.8%**
return rate — above 5% kills the launch gate
**Conversion**
**Bad****0.8%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Bad****$31K**
$31K/yr · 113K searches
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%") [** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, demon slayer costume for kids is a $31K/yr Amazon United States market (113K searches/yr). The top 5 brands hold 53% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 45/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **demon slayer costume for kids market data**
- **Units sold / yr**
- **500–750**
- avg 0–100/product
- **Revenue / yr**
- **$18K–$28K**
- units × avg price
- **Conversion rate**
- **0.8%**
- **Avg BSR**
- **#1,911**
- **Page quality**
- **0%**
- **Prime**
- **98%**
- **Sponsored**
- **68%**
- **Out of stock**
- **25.5%**
- **Avg brand age**
- **38 months**
- **Avg seller age**
- **168 days**
## **Competition & brand share**
Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen.
**Brands**
**26 **▲rising
**Sellers**
**28**
**Top-5 brand share**
**53%**
Top 20: 96%
**Top-5 click share**
**38%**
Top 20: 73%
**Open market**
**41%**
- Seaehey19% - JYakeji12% - Moalioi9% - Drofe7% - Zusnxaxe7% - Cosplaypark6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +0.8% search growth over the last 90 days.
18K13KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Sep, Oct · busiest ÷ quietest = 27.4×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/demon-slayer-costume-for-kids/trend)
## **Top demon slayer costume for kids search terms**
- **demon slayer cosplay kids**24K/yr+10.4%0.1% conv. - **demon slayer costume for kids**42K/yr-9.9%0.1% conv. - **demon slayer costume kids**19K/yr+0.1%0.5% conv. - **kids demon slayer costume**11K/yr+33.9%0.5% conv. - **demon slayer costumes for kids**7K/yr-11.2%0.2% conv. - **demon slayer kids costume**10K/yr-25.7%0.8% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/demon-slayer-costume-for-kids/search-terms)
## **Top demon slayer costume for kids 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.
0%3%$9386%$2K9%$3K12%$4K101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**JYakeji 11 pcs Cosplay Costume Kimono for Kids Adults Robe Japanese Anime Costume Halloween Kimono Outfit**JYakeji**$44.60**4.5★520 rev](https://www.amazon.com/dp/B0BXCXPGTM) [2**Seaehey Kids Cosplay Costume Anime Kimono Cloak Robes Cardigan Top Jacket Large**Seaehey**$19.23**4.4★151 rev](https://www.amazon.com/dp/B094CW2F7N) [3**Anime Cosplay Costume Kimono Halloween Women Mens Set Accessories**Moalioi**$28.94**4.4★255 rev](https://www.amazon.com/dp/B0BB7KG8WS) [4**Anime Cosplay Costume Cloak Outfit Halloween Party Uniform Robe Cape Dress for Kids Girls**Cosplaypark**$36.46**4.0★208 rev](https://www.amazon.com/dp/B088R7PD1B) [5**Drofe Anime Robes Tanjiro Cosplay Costume Zenitsu Kimono Blue**Drofe**$18.13**4.6★665 rev](https://www.amazon.com/dp/B091H3ZYYN)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Drofe Anime Robes Tanjiro Cosplay Costume Zenitsu Kimono**Drofe**$25.71**665 rev6mo ago](https://www.amazon.com/dp/B0G8BX6DPR) [**Kahopy Anime Cosplay Costume Kids Uniform Halloween Kimono Role Play Outfit Set for Boys and Girls**Kahopy**$35.78**34 rev11mo ago](https://www.amazon.com/dp/B0FLC6YN5Q) [**yyleasar Kids Full Set Anime Halloween Cosplay Costume for Kids Kimono Uniform Outfit with Sword (130(L))**yyleasar**$69.79**17 rev1y ago](https://www.amazon.com/dp/B0FGQ9WDMR) [**yyleasar Kids Full Set Anime Halloween Cosplay Costume for Kids Kimono Uniform Outfit with Sword (140(XL))**yyleasar**$69.08**17 rev1y ago](https://www.amazon.com/dp/B0FGPNKJMR) [**Powzaty Anime Cosplay Costume Kimono Full Set Adult Girls Robe Cloak Costume Set Halloween Kimono Outfit Cosplay with Wig (Butterfly Set Kids 150)**Powzaty**$47.72**51 rev1y ago](https://www.amazon.com/dp/B0F7RVHBWN)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Drofe Anime Robes Tanjiro Cosplay Costume Zenitsu Kimono**Drofe**$25.71**4.6★**▲ 288%**](https://www.amazon.com/dp/B0G8BX6DPR) [**Anime Cosplay Costume Kimono Halloween Women Mens Set Accessories**Moalioi**$28.94**4.4★**▲ 287%**](https://www.amazon.com/dp/B0BB7KG8WS) [**Seaehey Kids Cosplay Costume Anime Kimono Cloak Robes Cardigan Top Jacket Medium**Seaehey**$19.90**4.4★**▲ 250%**](https://www.amazon.com/dp/B094CWK5PY) [**Zusnxaxe Anime Costume Toddler Halloween Clothes Thanksgiving Kids Christmas Shirt and Pants Cosplay Outfit(White Long Sleeve 6T)**Zusnxaxe**$30.00**4.6★**▲ 227%**](https://www.amazon.com/dp/B0DQ7XJVRV) [**Kitimi Kamado Anime Cosplay Kimono Outfit Halloween Costume for Boys Girls Kids Anime Outfit**Kitimi**$25.53**4.7★**▲ 133%**](https://www.amazon.com/dp/B0C4KXWLL2)
**~~View all trending →~~**
## **What buyers say about demon slayer costume for kids**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**36%
*“Fits perfectly”*
**Quality-Overall**13%
*“Good quality”*
**Color**9%
*“the colors are spot on”*
**Value For Money**8%
*“for the whole set was a great deal”*
**Advertised Vs Actual Product**7%
*“This one came with everything listed”*
**Material Quality**7%
*“The product is of good material”*
**Comfort-Overall**7%
*“Was also comfortable”*
**Gifting Purpose**7%
*“it was his birthday gift”*
**Durability**2%
*“they are durable”*
**Thickness**2%
*“pretty thick quality”*
### **What buyers complain about **
**Size-Overall**28%
*“Sizing is not correct an adult medium didnt fit my 13yr old child”*
**Quality-Overall**21%
*“Poor quality”*
**Color**8%
*“Colors are wrong”*
**Advertised Vs Actual Product**8%
*“The items are honestly very badly detailed”*
**Design-Overall**8%
*“The design for the others were poor :/”*
**Value For Money**8%
*“It was expensive”*
**Assembly/Installation**4%
*“The swords are completely bent and weird and hard to put back together or make them straight”*
**Material Quality**4%
*“The material wasn't that good”*
### **Top return reasons **
**Size-Overall**62%
**Advertised Vs Actual Product**8%
**Quality-Overall**6%
**Length**5%
**Sleeve Fit**5%
**Material Quality**4%
**Defective Material/Parts**2%
**Waist Fit**2%
**Value For Money**1%
**Color**1%
## **Common questions**
- **Is demon slayer costume for kids profitable to sell on Amazon United States?**
- The niche generates $31K/yr across 50 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is +0.8%. Flapen's verdict: Skip it (45/100).
- **How competitive is the demon slayer costume for kids niche?**
- 26 brands and 28 sellers compete. The top 5 products take 38% of clicks and top 5 brands hold 53% of demand.
- **What do buyers complain about in demon slayer costume for kids?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Color. The return rate is 7.8% — above our launch gate.
- **When does demand for demon slayer costume for kids peak?**
- Demand peaks in Sep–Oct; the busiest month runs 27.4× the quietest.
- **What does it cost to enter the demon slayer costume for kids niche?**
- Listings span $18.13–$69.79; the average listing price is $36.92 (sweet spot $15–$100). The average incumbent carries 188 reviews — the moat a new listing must climb.
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