---
title: "Book Character Costumes for Kids — $99K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/book-character-costumes-for-kids"
last_updated: "2026-08-10T18:54:55.049Z"
locale: en
meta:
description: "Niche score 42/100 · $99K/yr market · 666K searches/yr · $20.93 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 42/100 · $99K/yr market · 666K searches/yr · $20.93 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Book Character Costumes for Kids — $99K/yr Amazon US Niche (2026) - Flapen"
---
# **book character costumes for kids**
**Skip it**
Soft demand (-88.1% this quarter) — this niche doesn't clear our bar today.
Market size 25Growth 0Conversion 9Competition 78Returns 17Price range 71Avg price 90Brand share 90Review moat 70Quality gap 35
**Brand share**
**Great****45%**
top-5 brand share — no brand owns this niche
**Avg price**
**Great****$20.93**
avg listing price — sweet spot $15–$100
**Competition**
**Great****37%**
top-5 click share — an open shelf
**Price range**
**Good****$5.74–$38.10**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Good****715.44**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$99K**
$99K/yr · 666K searches
**Returns**
**Bad****7.1%**
return rate — above 5% kills the launch gate
**Conversion**
**Bad****0.7%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Bad****-88.1%**
90-day search growth — must beat 0% to launch
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, book character costumes for kids is a $99K/yr Amazon United States market (666K searches/yr). The top 5 brands hold 45% of demand. Demand peaks in Mar–Oct–Nov. Verdict: Skip it — 42/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **book character costumes for kids market data**
- **Units sold / yr**
- **4K–5K**
- avg 0–100/product
- **Revenue / yr**
- **$84K–$105K**
- units × avg price
- **Conversion rate**
- **0.7%**
- **Avg BSR**
- **#5,021**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **84%**
- **Out of stock**
- **14.6%**
- **Avg brand age**
- **34 months**
- **Avg seller age**
- **171 days**
## **Competition & brand share**
Clicks spread well past the top 5 (37% combined) — an open shelf where new products get seen.
**Brands**
**35 **▼falling
**Sellers**
**77**
**Top-5 brand share**
**45%**
Top 20: 81%
**Top-5 click share**
**37%**
Top 20: 70%
**Open market**
**51%**
- Bioworld27% - Disguise5% - Hikkcos5% - Thiccywoov5% - Sincere Party5% - CONGRU3%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -88.1% search growth over the last 90 days.
150K100KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Mar, Oct, Nov · busiest ÷ quietest = 106.9×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/book-character-costumes-for-kids/trend)
## **Top book character costumes for kids search terms**
- **book character costumes for kids**316K/yr-91.8%0.6% conv. - **character day costume for girls**17K/yr-24.8%0.2% conv. - **storybook character costumes for kids**29K/yr-82.5%0.3% conv. - **character costumes for girls**8K/yr-11.9%0.0% conv. - **book character costumes for girls**35K/yr-83.9%0.1% conv. - **storybook character costumes**51K/yr-81.1%0.1% conv. - **kids book character costumes**34K/yr-91.9%0.8% conv. - **story book character costumes for girls**14K/yr-68.9%0.2% conv. - **book character costumes for boys**43K/yr-92.9%0.5% conv. - **story book character costumes for boys**13K/yr-63.1%0.2% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/book-character-costumes-for-kids/search-terms)
## **Top book character 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%10%$10K20%$20K30%$30K40%$40K1101001K10K 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**Bioworld Dog Man Superhero Costume Boys Blue Crew Neck Short Sleeve T-Shirt with Detachable Cape 6/7 (S)**Bioworld**$16.13**4.8★70 rev](https://www.amazon.com/dp/B0DRDR49G4) [2**Thiccywoov Book Character Costume Palm Tree Costume Set Include Palm Tree Headband and 52 Self Adhesive Felt Letters School Outfits for DIY Cosplay Role Play Classroom Party Accessory Teacher**Thiccywoov**$16.88**3.8★63 rev](https://www.amazon.com/dp/B0D78PKSCX) [3**Hikkcos Blue Cat Costume for Girls Blue Cat Ears and Tail Book Character Costumes Accessories Set for Halloween Animals Party Dress Up**Hikkcos**$14.91**4.2★29 rev](https://www.amazon.com/dp/B0F21HRTSW) [4**CONGRU 4 Pcs Halloween Costume Accessories Adults-Yellow Beanie Hat/Goggles/Gloves/Suspenders for Halloween Dress Up**CONGRU**$12.90**4.6★1,043 rev](https://www.amazon.com/dp/B0D7HHNBP6) [5**Sincere Party Girls Cat Costume Set Cat Role Play Book Week Celebration Dress Up Costume for Girls 6-8 years**Sincere Party**$23.30**4.6★52 rev](https://www.amazon.com/dp/B0FX8VQQ1F)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Davsolly Book Character Costume for Kids Blue Plaid Bubble Sleeve Dress for Girls Career Day Dress Up Birthday Gifts**Davsolly**$19.78**3 rev5mo ago](https://www.amazon.com/dp/B0GLDMRQ35) [**Disney Lilo & Stitch Big Girls 2 Piece Outfit Light Blue Short Sleeve Character Print Button Knit Top & Tweed Skirt Set Birthday Party Kids Dress Costume Summer Holiday Clothes Gift 8-9 Years**Disney**$24.95**815 rev6mo ago](https://www.amazon.com/dp/B0G9261YS7) [**Lingway Toys Girls Cat Costume Set 7Pcs Kids Cat Themed Book Day Cosplay Costume with Hat Headband 3-8Years**Lingway Toys**$21.74**22 rev8mo ago](https://www.amazon.com/dp/B0FXLZ78TZ) [**Sincere Party Girls Cat Costume Set Cat Role Play Book Week Celebration Dress Up Costume for Girls 6-8 years**Sincere Party**$23.30**52 rev8mo ago](https://www.amazon.com/dp/B0FX8VQQ1F) [**Nuolich Mouse Ears Headband Bow Tie Tail and 2PC Cookie Brooches Costume Accessories Set Party Dress Up**Nuolich**$13.79**45 rev12mo ago](https://www.amazon.com/dp/B0FHDHHYTF)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Disney Lilo & Stitch Big Girls 2 Piece Outfit Light Blue Short Sleeve Character Print Button Knit Top & Tweed Skirt Set Birthday Party Kids Dress Costume Summer Holiday Clothes Gift 8-9 Years**Disney**$24.95**4.7★**▲ 1000%**](https://www.amazon.com/dp/B0G9261YS7) [**Davsolly Book Character Costume for Kids Blue Plaid Bubble Sleeve Dress for Girls Career Day Dress Up Birthday Gifts**Davsolly**$19.78**4.2★**▲ 937%**](https://www.amazon.com/dp/B0GLDMRQ35) [**Ruikajia Girls Bat Spider Web Tulle Tutu Ruffle Princess Dress 4 Years Pink**Ruikajia**$18.43**4.2★**▲ 925%**](https://www.amazon.com/dp/B0DQGQ1TJR) [**Bioworld Dog Man Superhero Costume Boys Blue Crew Neck Short Sleeve T-Shirt with Detachable Cape 14/16 (XL)**Bioworld**$16.27**4.8★**▲ 894%**](https://www.amazon.com/dp/B0DRDS57H6) [**Little Red Riding Hood for Girls: Toddler Baby Kids Velvet Red Cape Cloak Princess Birthday Outfit Party Red + Black 6-7 Years**IMEKIS**$28.04**4.5★**▲ 681%**](https://www.amazon.com/dp/B0CCL4NPHC)
**~~View all trending →~~**
## **What buyers say about book character costumes for kids**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**26%
*“the sizing is flexible and it fit well without being tight which makes it great for school events, Halloween, or pretend play at home, I like that the pieces are durable enough to be worn more than once and still look good, and overall it is a charming costume that delivers quality, comfort, and lots of imaginative fun for the price”*
**Quality-Overall**20%
*“Very good quality, soft”*
**Value For Money**10%
*“Great Value”*
**Soft Feel**6%
*“They loved the comfort of the material being very soft and silky”*
**Advertised Vs Actual Product**5%
*“Just like in the picture”*
**Gifting Purpose**5%
*“Great Christmas gift”*
**Comfort-Overall**3%
*“So comfortable”*
**Durability**3%
*“Durable, warm and cozy”*
**Material Quality**3%
*“true to size very good material”*
**Fun/Entertainment Experience**2%
*“Fun costume”*
### **What buyers complain about **
**Durability**14%
*“it's not durable for a toddler”*
**Size-Overall**13%
*“Runs small”*
**Quality-Overall**11%
*“buy a better quality costume from the get go”*
**Product Condition**10%
*“Super used costume”*
**Touch/Button Controls**4%
*“Buttons are stickers not pins”*
**Assembly/Installation**3%
*“It's crazy that it's delivered unassembled”*
**Advertised Vs Actual Product**3%
*“Pretty disappointed that I trusted it would be as described”*
**Ease Of Cleaning**3%
*“It was dirty”*
**Material Quality**2%
*“Not a good material very cheap”*
**Adhesion/Stickiness**2%
*“The thing that adjusts the glasses broke so therefore I have to hot glue it before my sons birthday”*
### **Top return reasons **
**Size-Overall**67%
**Quality-Overall**6%
**Material Quality**4%
**Advertised Vs Actual Product**4%
**Product Condition**3%
**Defective Material/Parts**3%
**Value For Money**3%
**Length**2%
**Comfort-Overall**1%
**Durability**1%
## **Common questions**
- **Is book character costumes for kids profitable to sell on Amazon United States?**
- The niche generates $99K/yr across 43 tracked products. 0 of 9 products launched in the last 360 days are still selling. 90-day search growth is -88.1%. Flapen's verdict: Skip it (42/100).
- **How competitive is the book character costumes for kids niche?**
- 35 brands and 77 sellers compete. The top 5 products take 37% of clicks and top 5 brands hold 45% of demand.
- **What do buyers complain about in book character costumes for kids?**
- Top complaints mined from reviews: Durability, Size-Overall, Quality-Overall. The return rate is 7.1% — above our launch gate.
- **When does demand for book character costumes for kids peak?**
- Demand peaks in Mar–Oct–Nov; the busiest month runs 106.9× the quietest.
- **What does it cost to enter the book character costumes for kids niche?**
- Listings span $5.74–$38.10; the average listing price is $20.93 (sweet spot $15–$100). The average incumbent carries 715 reviews — the moat a new listing must climb.
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