---
title: "Costumes for Kids — $570K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/costumes-for-kids"
last_updated: "2026-08-11T11:48:44.861Z"
locale: en
meta:
description: "Niche score 52/100 · $570K/yr market · 3.7M searches/yr · $38.18 avg price. Weak search conversion (0.4%) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 52/100 · $570K/yr market · 3.7M searches/yr · $38.18 avg price. Weak search conversion (0.4%) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Costumes for Kids — $570K/yr Amazon US Niche (2026) - Flapen"
---
# **costumes for kids**
**Worth a look**
Shows no brand lock-in (top 5 brands take 33% of clicks), but weak search conversion (0.4%) keeps it on the watch list.
Market size 63Growth 11Conversion 5Competition 93Returns 29Price range 73Avg price 95Brand share 96Review moat 40Quality gap 33
**Brand share**
**Incredible****33%**
top-5 brand share — no brand owns this niche
**Avg price**
**Incredible****$38.18**
avg listing price — sweet spot $15–$100
**Competition**
**Great****22%**
top-5 click share — an open shelf
**Price range**
**Good****$9.95–$126.46**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Good****$570K**
$570K/yr · 3.7M searches
**Review moat**
**Okay****2,545.98**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Returns**
**Okay****4.7%**
return rate — above 5% kills the launch gate
**Growth**
**Bad****-27.5%**
90-day search growth — must beat 0% to launch
**Conversion**
**Bad****0.4%**
search→purchase rate — share of searches ending in a sale
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")
According to Flapen's Amazon United States niche tracking, costumes for kids is a $570K/yr Amazon United States market (3.7M searches/yr). The top 5 brands hold 33% of demand. Demand peaks in Sep–Oct–Nov. Verdict: Worth a look — 52/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **costumes for kids market data**
- **Units sold / yr**
- **13K–15K**
- avg 0–100/product
- **Revenue / yr**
- **$477K–$573K**
- units × avg price
- **Conversion rate**
- **0.4%**
- **Avg BSR**
- **#817**
- **Page quality**
- **0%**
- **Prime**
- **99%**
- **Sponsored**
- **90%**
- **Out of stock**
- **7.8%**
- **Avg brand age**
- **40 months**
- **Avg seller age**
- **153 days**
## **Competition & brand share**
Clicks spread well past the top 5 (22% combined) — an open shelf where new products get seen.
**Brands**
**64 **▲rising
**Sellers**
**110**
**Top-5 brand share**
**33%**
Top 20: 69%
**Top-5 click share**
**22%**
Top 20: 52%
**Open market**
**63%**
- YuanLu10% - Jazwares Costume Play7% - Marvel7% - Yavakoor5% - Davvew4% - Rubies4%
## **Demand & seasonality**
Weekly Amazon search volume, last 88 weeks — -27.5% search growth over the last 90 days.
600K400KHoliday '24Spike '25Prime Day '25Spike '26 seasonDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Sep, Oct, Nov · busiest ÷ quietest = 36.3×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/costumes-for-kids/trend)
## **Top costumes for kids search terms**
- **kids costumes**778K/yr-21.0%0.4% conv. - **costumes for kids**672K/yr-19.1%0.3% conv. - **boys costumes**397K/yr-39.4%0.5% conv. - **costumes for boys**443K/yr-59.4%0.4% conv. - **disfraces para nios**138K/yr-1.1%0.1% conv. - **kids costume**210K/yr-28.1%0.2% conv. - **costume for kids**120K/yr-29.3%0.3% conv. - **trajes**25K/yr+39.6%0.0% conv. - **costume kids**154K/yr-35.8%0.3% conv. - **disfraz para nios**81K/yr+15.2%0.1% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/costumes-for-kids/search-terms)
## **Top costumes 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%2%$11K4%$23K6%$34K8%$46K1101001K10K100K 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**Marvel Unisex Child Kids 2-piece Snug-fit Cotton Pajama Set Spider Costume 6 US**Marvel**$13.73**4.7★3,269 rev](https://www.amazon.com/dp/B09D4TTPNZ) [2**YuanLu Kids Suits for Boys Navy Blue Boy Suit Slim Fit Ring Bearer Outfit Wedding Guest Dresswear Toddler Tuxedo Size 2T**YuanLu**$45.70**4.4★7,269 rev](https://www.amazon.com/dp/B01M3U4MS1) [3**Davvew Little Girls Dress Sequin Pink Rainbow Dress Flower Girl Dress Easter Dress Light up Princess Dresses for Toddler Girls Kids Costume for Brithday Wedding Party**Davvew**$34.49**4.6★208 rev](https://www.amazon.com/dp/B0D9LDQBMD) [4**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) [5**Elite Sports IBJJF Ultra Light BJJ Brazilian Jiu Jitsu Gi for Kids with Preshrunk Fabric and Free Belt (Black 1)**Elite Sports**$43.46**4.8★5,654 rev](https://www.amazon.com/dp/B08B3YTGWB)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**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) [**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**$28.79**87 rev10mo ago](https://www.amazon.com/dp/B0FNMB2RFV) [**Disney Store Official Boys Halloween Costumes for Play - Premium Disney Cosplay Dress Up Outfits for Children- Darth Vader Costume with Lights and Sounds for Kids - Size 7/8**Disney Store**$57.36**163 rev10mo ago](https://www.amazon.com/dp/B0FMZNN4LV) [**AmazingSea Boys Suit Black Suits for Boys Size 8 for Wedding Graduation Formal Tuxedo Set for Big Kids**AmazingSea**$50.26**807 rev1y ago](https://www.amazon.com/dp/B0DQJ6V177) [**14Pcs Toddler Dress up Clothes Boys Dress up Costumes for Play Kids Dress up Set with Firefighter Construction Worker Chef Police Costume Toddler Boy Toys Christmas Birthday Gifts for 3-6 Years Old**Fedio**$31.70**280 rev1y ago](https://www.amazon.com/dp/B0DJS5NHW4)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Andes Safety Hazmat Suit Heavy Duty Full Body Disposable Paint Suit Coverall with Hood Elastic Wrists and Ankles (XL)**Andes Safety**$9.95**4.6★**▲ 335%**](https://www.amazon.com/dp/B0CGGPGTGD) [**Elite Sports IBJJF Ultra Light BJJ Brazilian Jiu Jitsu Gi for Kids with Preshrunk Fabric and Free Belt (Black 1)**Elite Sports**$43.46**4.8★**▲ 331%**](https://www.amazon.com/dp/B08B3YTGWB) [**Davvew Little Girls Dress Sequin Pink Rainbow Dress Flower Girl Dress Easter Dress Light up Princess Dresses for Toddler Girls Kids Costume for Brithday Wedding Party**Davvew**$34.49**4.6★**▲ 331%**](https://www.amazon.com/dp/B0D9LDQBMD) [**Toobour Boys Gothic Tailcoat Suits 3 Piece Long Tuxedo Suit for Kids Costume Jacket Vest Pants Set for Wedding Black**Toobour**$59.35**4.5★**▲ 331%**](https://www.amazon.com/dp/B0DJR1R3JW) [**AmazingSea Boys Suit Black Suits for Boys Size 8 for Wedding Graduation Formal Tuxedo Set for Big Kids**AmazingSea**$50.26**4.7★**▲ 328%**](https://www.amazon.com/dp/B0DQJ6V177)
**~~View all trending →~~**
## **What buyers say about costumes for kids**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**19%
*“A+ Quality”*
**Size-Overall**18%
*“Fit as expected”*
**Fun/Entertainment Experience**12%
*“Imaginative play”*
**Value For Money**10%
*“Good value for money”*
**Gifting Purpose**6%
*“Great gift”*
**Material Quality**4%
*“Material is soft”*
**Advertised Vs Actual Product**3%
*“Looks as pictured”*
**Ease Of Use**3%
*“Easy to use”*
**Durability**3%
*“very durable material”*
**Comfort-Overall**2%
*“They are comfortable”*
### **What buyers complain about **
**Quality-Overall**22%
*“Cheap quality”*
**Size-Overall**17%
*“Little big”*
**Durability**8%
*“Breaks easily”*
**Material Quality**5%
*“it doesn't seem the material will last”*
**Value For Money**5%
*“The price is a little much”*
**Product Condition**3%
*“The item came used”*
**Advertised Vs Actual Product**3%
*“Not as advertised”*
**Stitch/Finish/Polish**2%
*“The seams are coming apart”*
**Strength**2%
*“Flimsy”*
**Strap/String Quality**2%
*“Purse strap broke first day”*
### **Top return reasons **
**Size-Overall**65%
**Quality-Overall**5%
**Advertised Vs Actual Product**4%
**Material Quality**4%
**Length**3%
**Waist Fit**2%
**Sleeve Fit**2%
**Shoulder Fit**2%
**Value For Money**2%
**Product Condition**2%
## **Common questions**
- **Is costumes for kids profitable to sell on Amazon United States?**
- The niche generates $570K/yr across 100 tracked products. 11 of 17 products launched in the last 360 days are still selling. 90-day search growth is -27.5%. Flapen's verdict: Worth a look (52/100).
- **How competitive is the costumes for kids niche?**
- 64 brands and 110 sellers compete. The top 5 products take 22% of clicks and top 5 brands hold 33% of demand.
- **What do buyers complain about in costumes for kids?**
- Top complaints mined from reviews: Quality-Overall, Size-Overall, Durability. The return rate is 4.7%.
- **When does demand for costumes for kids peak?**
- Demand peaks in Sep–Oct–Nov; the busiest month runs 36.3× the quietest.
- **What does it cost to enter the costumes for kids niche?**
- Listings span $9.95–$126.46; the average listing price is $38.18 (sweet spot $15–$100). The average incumbent carries 2,546 reviews — the moat a new listing must climb.
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