---
title: "Rumi Cosplay — $187K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/rumi-cosplay"
last_updated: "2026-08-11T00:53:27.801Z"
locale: en
meta:
description: "Niche score 44/100 · $187K/yr market · 401K searches/yr · $64.70 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · $187K/yr market · 401K searches/yr · $64.70 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Rumi Cosplay — $187K/yr Amazon US Niche (2026) - Flapen"
---
# **rumi cosplay**
**Skip it**
High returns (16.9%) — this niche doesn't clear our bar today.
Market size 37Growth 19Conversion 9Competition 55Returns 0Price range 95Avg price 88Brand share 28Review moat 97Quality gap 97
**Quality gap**
**Incredible****3.8★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Incredible****57.77**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Incredible****$21.47–$97.08**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Great****$64.70**
avg listing price — sweet spot $15–$100
**Competition**
**Good****52%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Okay****$187K**
$187K/yr · 401K searches
**Brand share**
**Okay****88%**
top-5 brand share — brands hold most of the demand
**Growth**
**Bad****-12.9%**
90-day search growth — must beat 0% to launch
**Conversion**
**Bad****0.7%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Bad****16.9%**
return rate — above 5% kills the launch gate
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** Quality Gap**](https://flapen.com/research/niches?market=us&signal=quality_gap "Avg rating < 4.0") [** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, rumi cosplay is a $187K/yr Amazon United States market (401K searches/yr). The top 5 brands hold 88% of demand. Verdict: Skip it — 44/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **rumi cosplay market data**
- **Units sold / yr**
- **3K–3K**
- avg 0–100/product
- **Revenue / yr**
- **$162K–$194K**
- units × avg price
- **Conversion rate**
- **0.7%**
- **Avg BSR**
- **#7,287**
- **Page quality**
- **0%**
- **Prime**
- **68%**
- **Sponsored**
- **91%**
- **Out of stock**
- **30.3%**
- **Avg brand age**
- **18 months**
- **Avg seller age**
- **193 days**
## **Competition & brand share**
The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**11 **▲rising
**Sellers**
**15**
**Top-5 brand share**
**88%**
Top 20: 100%
**Top-5 click share**
**52%**
Top 20: 98%
**Open market**
**7%**
- OSIAS43% - Linnektome14% - Cosfun12% - Spirit Halloween10% - ZBDFNJ9% - KPop Demon Hunters5% - Open — no brand owns it (5 brands, 7%)
## **Demand**
Weekly Amazon search volume, last 43 weeks — -12.9% search growth over the last 90 days.
50K30KSpike '25Sep '25Nov '25Dec '25Feb '26Mar '26May '26
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/rumi-cosplay/trend)
## **Top rumi cosplay search terms**
- **rumi costume adult**75K/yr+16.8%0.5% conv. - **rumi cosplay**74K/yr-9.8%0.0% conv. - **rumi adult costume**42K/yr-2.2%0.9% conv. - **rumi costume women**93K/yr-65.0%0.4% conv. - **adult rumi costume**20K/yr+3.5%0.6% conv. - **rumi kpop demon hunters costume adult**15K/yr+105.7%0.3% conv. - **rumi costume adult women**10K/yr-22.4%1.3% conv. - **rumi costume adults**7K/yr+68.3%0.3% conv. - **rumi costume for adults**4K/yr+6.8%0.0% conv. - **womens rumi costume**8K/yr-11.5%0.8% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/rumi-cosplay/search-terms)
## **Top rumi cosplay 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%5%$9K10%$19K15%$28K20%$37K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 22 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**OSIAS Women Rumi Cosplay Costume Golden Stage Outfit Black With Sequined Design (XL)**OSIAS**$94.41**3.4★8 rev](https://www.amazon.com/dp/B0FQNT7Q65) [2**Linnektome Costume Uniform Dress Full Set For Women Party Outfit**Linnektome**$48.57**3.4★61 rev](https://www.amazon.com/dp/B0FMRQQ5M6) [3**Spirit Halloween KPop Demon Hunters Adult Rumi Costume Officially Licensed Korean Pop Idol Outfit Lead Singer Women Size ADULT EXTRA LARGE Standard Multicolor**Spirit Halloween**$71.51**4.5★18 rev](https://www.amazon.com/dp/B0FQPDPQVN) [4**ZBDFNJ Womens Role-Playing Costumes Complete Costumes and Accessories Halloween Costumes**ZBDFNJ**$57.26**3.8★32 rev](https://www.amazon.com/dp/B0FP96HJFK) [5**OSIAS Women Rumi Cosplay Costume Golden Stage Outfit Black With Sequined Design (M)**OSIAS**$93.19**3.4★8 rev](https://www.amazon.com/dp/B0FQNSN74V)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**FENGLONG-YB Costume Cosplay Golden For Girls Women With Wigs Halloween Top Pants Full Set Outfit**FENGLONG-YB**$74.78**95 rev9mo ago](https://www.amazon.com/dp/B0FSLZFMXT) [**KPop Demon Hunters Rumis Yellow Jacket Unisex Anime-Inspired Cosplay & Streetwear Fashion Coat - Officially Licensed - Large**KPop Demon Hunters**$87.78**12 rev9mo ago](https://www.amazon.com/dp/B0FRB786YC) [**ESUNO Hair Cap+47 inchs Long Purple Wig with Braids Purple Braided Wig for Women Extra Long Cosplay Outfit Halloween Ponytail Costume Adult Anime Outfit for Halloween Party Cosplay Comic Con**ESUNO**$21.47**38 rev9mo ago](https://www.amazon.com/dp/B0FR4GB51N) [**OSIAS Women Rumi Cosplay Costume Golden Stage Outfit Black With Sequined Design (XL)**OSIAS**$94.41**8 rev10mo ago](https://www.amazon.com/dp/B0FQNT7Q65) [**Spirit Halloween KPop Demon Hunters Adult Rumi Costume Officially Licensed Korean Pop Idol Outfit Lead Singer Women Size ADULT EXTRA LARGE Standard Multicolor**Spirit Halloween**$71.51**18 rev10mo ago](https://www.amazon.com/dp/B0FQPDPQVN)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**KPop Demon Hunters Rumis Yellow Jacket Unisex Anime-Inspired Cosplay & Streetwear Fashion Coat - Officially Licensed - Large**KPop Demon Hunters**$87.78**4.7★**▲ 127%**](https://www.amazon.com/dp/B0FRB786YC) [**Linnektome Costume Uniform Dress Full Set For Women Party Outfit**Linnektome**$48.57**3.4★**▲ 122%**](https://www.amazon.com/dp/B0FMRQQ5M6) [**Linnektome Costume Uniform Dress Full Set For Women Party Outfit**Linnektome**$48.35**3.4★**▲ 109%**](https://www.amazon.com/dp/B0FMRPSC58) [**OSIAS Women Rumi Cosplay Costume With Leather Stretch Shorts and Padded Shoulder Jacket (XXL)**OSIAS**$85.64**4.4★**▲ 92%**](https://www.amazon.com/dp/B0FPFP2PZM) [**FENGLONG-YB Costume Cosplay Golden For Girls Women With Wigs Halloween Top Pants Full Set Outfit**FENGLONG-YB**$74.78**3.6★**▲ 91%**](https://www.amazon.com/dp/B0FSLZFMXT)
**~~View all trending →~~**
## **What buyers say about rumi cosplay**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**29%
*“Good quality for costume”*
**Size-Overall**18%
*“Fits and looks great”*
**Ease Of Use**6%
*“it was pretty easy to use that way”*
**Wig/Artificial Hair Quality**5%
*“Great wig piece”*
**Value For Money**4%
*“its so worth it”*
**Material Quality**4%
*“Great quality material”*
**Soft Feel**3%
*“Its very soft and quite beautiful,”*
**Thickness**3%
*“The braid is really thick which is nice”*
**Stretchability/Expandability/Elasticity**3%
*“This one has stretchy type shorts”*
**Adjustability/Rotatability/Reclining**2%
*“the tailor did a great job adjusting it”*
### **What buyers complain about **
**Size-Overall**24%
*“Too big”*
**Weight Heavy**18%
*“is too heavy”*
**Quality-Overall**13%
*“Not quality”*
**Wig/Artificial Hair Quality**6%
*“The wig messed up completely”*
**Durability**5%
*“Belt snapped when I tried it on”*
**Embellishment/Embroidery Quality**4%
*“It didn't come with the embroidery shown in the photo and video”*
**Smell**4%
*“Smelled awful”*
**Advertised Vs Actual Product**3%
*“Misleading product”*
**Functionality-Overall**3%
*“just did not work”*
**Material Quality**2%
*“Oh and the material on the white part of the costume is all cheap plastic”*
### **Top return reasons **
**Size-Overall**67%
**Wig/Artificial Hair Quality**6%
**Advertised Vs Actual Product**5%
**Quality-Overall**3%
**Sleeve Fit**3%
**Weight Heavy**3%
**Length**2%
**Waist Fit**2%
**Defective Material/Parts**1%
**Value For Money**1%
## **Common questions**
- **Is rumi cosplay profitable to sell on Amazon United States?**
- The niche generates $187K/yr across 22 tracked products. 0 of 22 products launched in the last 360 days are still selling. 90-day search growth is -12.9%. Flapen's verdict: Skip it (44/100).
- **How competitive is the rumi cosplay niche?**
- 11 brands and 15 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 88% of demand.
- **What do buyers complain about in rumi cosplay?**
- Top complaints mined from reviews: Size-Overall, Weight Heavy, Quality-Overall. The return rate is 16.9% — above our launch gate.
- **What does it cost to enter the rumi cosplay niche?**
- Listings span $21.47–$97.08; the average listing price is $64.70 (sweet spot $15–$100). The average incumbent carries 58 reviews — the moat a new listing must climb.
## **Related niches in Clothing, Shoes & Jewelry**
- 72 [**first communion gifts for boys**](https://flapen.com/research/us/clothing-shoes-jewelry/first-communion-gifts-for-boys)$398K/yr+223.5%**Worth a look**- 72 [**fifa world cup 2026 tshirt**](https://flapen.com/research/us/clothing-shoes-jewelry/fifa-world-cup-2026-tshirt)$177K/yr>1,000%**Worth a look**- 72 [**american flag hat**](https://flapen.com/research/us/clothing-shoes-jewelry/american-flag-hat)$764K/yr+428.8%**Worth a look**- 72 [**white socks men**](https://flapen.com/research/us/clothing-shoes-jewelry/white-socks-men)$3.0M/yr+13.3%**Launch it**- 72 [**american flag overalls**](https://flapen.com/research/us/clothing-shoes-jewelry/american-flag-overalls)$662K/yr>1,000%**Worth a look**- 73 [**white ankle socks for men**](https://flapen.com/research/us/clothing-shoes-jewelry/white-ankle-socks-for-men)$448K/yr+88.3%**Worth a look**[**All Clothing, Shoes & Jewelry niches **](https://flapen.com/research/us/clothing-shoes-jewelry)