---
title: "rumi costume — Niche Verdict: Worth a look (61/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/clothing-shoes-jewelry/rumi-costume"
last_updated: "2026-07-14T02:03:24.531Z"
locale: en
meta:
  description: "rumi costume shows a $2.5M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list."
  "og:description": "rumi costume shows a $2.5M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list."
  "og:title": "rumi costume — Niche Verdict: Worth a look (61/100) | Amazon United States - Flapen"
---

Back to Flapen home

# **rumi costume**

**Worth a look**

Shows a $2.5M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 95Growth 7Conversion 10Competition 81Returns 19Price range 90Avg price 95Brand share 84Review moat 93Quality gap 82

**Market size**

**Incredible****$2.5M**

$2.5M/yr · 8.0M searches

**Avg price**

**Incredible****$38.52**

avg listing price — sweet spot $15–$100

**Review moat**

**Great****148.13**

avg incumbent reviews — the moat a new listing must climb

**Price range**

**Great****$9.56–$93.19**

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

**Brand share**

**Great****51%**

top-5 brand share — no brand owns this niche

**Quality gap**

**Great****4.2★**

avg incumbent rating — lower means beatable quality

**Competition**

**Great****34%**

top-5 click share — an open shelf

**Returns**

**Bad****7.5%**

return rate — above 6% kills the launch gate

**Conversion**

**Bad****0.8%**

search→purchase rate — share of searches ending in a sale

**Growth**

**Bad****-36.3%**

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

## **Competition**

Clicks spread well past the top 5 (34% combined) — an open shelf where new products get seen.

**Brands**

**26 **

**Sellers**

**30**

**Top-5 brand share**

**51%**

**Open market**

**44%**

- WYYXXT19% - AOVCLKID11% - FENGLONG-YB8% - JIEANYAN7% - RUXINRUA6% - Lgandpg5%

## **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%4%$98K8%$196K12%$295K16%$393K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

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

All 46 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![WYYXXT 2Pcs Girls Rumi Princess Loose Comfortable Home Wear Dress 5-6 Years Multicolor](https://m.media-amazon.com/images/I/51Tdu6+jI3L.jpg)**WYYXXT 2Pcs Girls Rumi Princess Loose Comfortable Home Wear Dress 5-6 Years Multicolor**WYYXXT**$24.05**5.0★3 rev](https://www.amazon.com/dp/B0GFP3QHFJ) [2![Purple Braiding Hair 24Inch 3 Packs Braiding Hair Pre Stretched Colored Hair Extensions for Twist or Box Braids Long Synthetic Crochet Braids for Stage Party Christmas Halloween Costume Cosplay](https://m.media-amazon.com/images/I/4136uwQaO9L.jpg)**Purple Braiding Hair 24Inch 3 Packs Braiding Hair Pre Stretched Colored Hair Extensions for Twist or Box Braids Long Synthetic Crochet Braids for Stage Party Christmas Halloween Costume Cosplay**JIEANYAN**$10.88**4.6★663 rev](https://www.amazon.com/dp/B0FPQX8TYY) [3![WYYXXT Girls Rumi Princess Cartoon Daily Dress Halloween Birthday Party Pop Outfits(4-5T Yellow)](https://m.media-amazon.com/images/I/41VhFz7z3mL.jpg)**WYYXXT Girls Rumi Princess Cartoon Daily Dress Halloween Birthday Party Pop Outfits(4-5T Yellow)**WYYXXT**$23.54**4.2★3 rev](https://www.amazon.com/dp/B0GPM4WDL2) [4![FENGLONG-YB Costume Cosplay Golden For Girls Women With Wigs Halloween Top Pants Full Set Outfit](https://m.media-amazon.com/images/I/41V3VxX4jQL.jpg)**FENGLONG-YB Costume Cosplay Golden For Girls Women With Wigs Halloween Top Pants Full Set Outfit**FENGLONG-YB**$74.78**3.6★95 rev](https://www.amazon.com/dp/B0FSLZFMXT) [5![RUXINRUA Girls Cosplay Costume 3-13 Years Kids Lining Jacket Shorts 3PCS Uniform Outfits with Wig (5-6 years)](https://m.media-amazon.com/images/I/41bHyD8-p8L.jpg)**RUXINRUA Girls Cosplay Costume 3-13 Years Kids Lining Jacket Shorts 3PCS Uniform Outfits with Wig (5-6 years)**RUXINRUA**$42.50**4.8★48 rev](https://www.amazon.com/dp/B0CMDF377W)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![QZVUPA Girls Stage Costume Black Halloween Costume for Kids Birthday Cosplay Party Dress Up](https://m.media-amazon.com/images/I/41RSB1gHoQL.jpg)**QZVUPA Girls Stage Costume Black Halloween Costume for Kids Birthday Cosplay Party Dress Up**QZVUPA**$28.08**11 rev1mo ago](https://www.amazon.com/dp/B0GXWFYK1H) [![QZVUPA Girls Stage Costume Black Halloween Costume for Kids Birthday Cosplay Party Dress Up](https://m.media-amazon.com/images/I/41RSB1gHoQL.jpg)**QZVUPA Girls Stage Costume Black Halloween Costume for Kids Birthday Cosplay Party Dress Up**QZVUPA**$27.53**11 rev1mo ago](https://www.amazon.com/dp/B0GXW1NB23) [![LEIBUSSKII Girls Halloween Costume Pop Idol Cosplay CostumeBlack and Yellow Polyester Top and Pants Set for 3-12 Years (Black 7-8 Years)](https://m.media-amazon.com/images/I/31hJLilEAcL.jpg)**LEIBUSSKII Girls Halloween Costume Pop Idol Cosplay CostumeBlack and Yellow Polyester Top and Pants Set for 3-12 Years (Black 7-8 Years)**LEIBUSSKII**$39.55**19 rev2mo ago](https://www.amazon.com/dp/B0GYJBCV2J) [![AOVCLKID Girls Princess Rumi Cartoon Flutter Sleeves Pop Dress(6-7 Years Yellow)](https://m.media-amazon.com/images/I/41DeuOgObYL.jpg)**AOVCLKID Girls Princess Rumi Cartoon Flutter Sleeves Pop Dress(6-7 Years Yellow)**AOVCLKID**$19.85**4 rev2mo ago](https://www.amazon.com/dp/B0GWXW92TX) [![ZBDFNJ Yellow Clothing Blue Clothing Complete Set of Tops Pants Wig Accessories Theme Party Outfit](https://m.media-amazon.com/images/I/41-aGiGz2GL.jpg)**ZBDFNJ Yellow Clothing Blue Clothing Complete Set of Tops Pants Wig Accessories Theme Party Outfit**ZBDFNJ**$34.75**1 rev3mo ago](https://www.amazon.com/dp/B0GVLYVFC9)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![KPJSDT Girls Stage Costume Jacket Tank Top Shorts Set Printed Halloween Outfit for Kids Party Dress Up](https://m.media-amazon.com/images/I/41-J8LXVlgL.jpg)**KPJSDT Girls Stage Costume Jacket Tank Top Shorts Set Printed Halloween Outfit for Kids Party Dress Up**KPJSDT**$32.96**4.5★**▲ 239%**](https://www.amazon.com/dp/B0GS1DC7XS) [![QZVUPA Girls Stage Costume Black Halloween Costume for Kids Birthday Cosplay Party Dress Up](https://m.media-amazon.com/images/I/41RSB1gHoQL.jpg)**QZVUPA Girls Stage Costume Black Halloween Costume for Kids Birthday Cosplay Party Dress Up**QZVUPA**$28.08**4.3★**▲ 238%**](https://www.amazon.com/dp/B0GXWFYK1H) [![AOVCLKID Girls Rumi Princess Loose Comfortable Home Wear Dress 5-6 Years Yellow/Gold](https://m.media-amazon.com/images/I/51Bk6niqibL.jpg)**AOVCLKID Girls Rumi Princess Loose Comfortable Home Wear Dress 5-6 Years Yellow/Gold**AOVCLKID**$21.03**4.8★**▲ 237%**](https://www.amazon.com/dp/B0GS5GQW79) [![LEIBUSSKII Girls Halloween Costume Pop Idol Cosplay CostumeBlack and Yellow Polyester Top and Pants Set for 3-12 Years (Black 7-8 Years)](https://m.media-amazon.com/images/I/31hJLilEAcL.jpg)**LEIBUSSKII Girls Halloween Costume Pop Idol Cosplay CostumeBlack and Yellow Polyester Top and Pants Set for 3-12 Years (Black 7-8 Years)**LEIBUSSKII**$39.55**4.4★**▲ 237%**](https://www.amazon.com/dp/B0GYJBCV2J) [![KPJSDT Girls Stage Costume Jacket Tank Top Shorts Set Printed Halloween Outfit for Kids Party Dress Up](https://m.media-amazon.com/images/I/41h8ZFmwfGL.jpg)**KPJSDT Girls Stage Costume Jacket Tank Top Shorts Set Printed Halloween Outfit for Kids Party Dress Up**KPJSDT**$29.65**3.9★**▲ 237%**](https://www.amazon.com/dp/B0GS1D3ZG1)

**~~View all trending →~~**

## **Demand**

Weekly Amazon search volume, last 46 weeks — -36.3% search growth over the last 90 days.

900K700KSpike '25Aug '25Oct '25Nov '25Jan '26Mar '26Apr '26Jun '26

## **Reviews**

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

### **What buyers love **

**Size-Overall**16%

*“The size was accurate”*

**Quality-Overall**14%

*“Great quality for this wig”*

**Value For Money**7%

*“I definitely think it was affordable and totally worth every penny for all the smiles and excitement”*

**Color**5%

*“Color was accurate”*

**Comfort-Overall**4%

*“They are comfortable”*

**Advertised Vs Actual Product**4%

*“Did the job”*

**Ease Of Use**3%

*“Ease to use”*

**Material Quality**3%

*“soft material”*

**Soft Feel**3%

*“The material feel soft and smooth”*

**Design-Overall**3%

*“Accurate design”*

### **What buyers complain about **

**Quality-Overall**22%

*“Bad quality”*

**Durability**22%

*“Easily broke”*

**Size-Overall**9%

*“Runs extremely large”*

**Value For Money**5%

*“Not worth the money”*

**Color**5%

*“The shorts fade after one wash to a gray color”*

**Material Quality**3%

*“so thin for the price the material could have been a lot better”*

**Strength**3%

*“is fragile”*

**Print Quality**2%

*“I was expecting cheap materials and crooked prints”*

**Product Condition**2%

*“also that this was resold it was for a birthday party this weekend so gross especially when purchased as a new item for it came with no tags just in a plastic bag”*

**Ease Of Use**2%

*“broke very easily”*

### **Top return reasons **

**Size-Overall**49%

**Quality-Overall**6%

**Defective Material/Parts**6%

**Advertised Vs Actual Product**5%

**Material Quality**4%

**Durability**3%

**Wig/Artificial Hair Quality**3%

**Weight Heavy**2%

**Color**2%

**Suitability Long Hair**2%