---
title: "Rumi Golden Costume Kids — $281K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/rumi-golden-costume-kids"
last_updated: "2026-08-10T23:03:33.593Z"
locale: en
meta:
description: "Niche score 57/100 · $281K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 57/100 · $281K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Rumi Golden Costume Kids — $281K/yr Amazon US Niche (2026) - Flapen"
---
# **rumi golden costume kids**
**Worth a look**
Shows a sweet-spot price point ($36.51 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 50Growth 12Conversion 14Competition 89Returns 21Price range 84Avg price 95Brand share 81Review moat 94Quality gap 92
**Avg price**
**Incredible****$36.51**
avg listing price — sweet spot $15–$100
**Review moat**
**Great****110.11**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Great****4.0★**
avg incumbent rating — lower means beatable quality
**Competition**
**Great****26%**
top-5 click share — an open shelf
**Price range**
**Great****$9.54–$107.45**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Great****54%**
top-5 brand share — no brand owns this niche
**Market size**
**Good****$281K**
$281K/yr · 687K searches
**Returns**
**Bad****6.1%**
return rate — above 5% kills the launch gate
**Conversion**
**Bad****1.1%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Bad****-25.4%**
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%") [** Out of Stock**](https://flapen.com/research/niches?market=us&signal=out_of_stock "OOS rate > 10%")
According to Flapen's Amazon United States niche tracking, rumi golden costume kids is a $281K/yr Amazon United States market (687K searches/yr). The top 5 brands hold 54% of demand. Verdict: Worth a look — 57/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **rumi golden costume kids market data**
- **Units sold / yr**
- **4K–5K**
- avg 0–100/product
- **Revenue / yr**
- **$146K–$183K**
- units × avg price
- **Conversion rate**
- **1.1%**
- **Avg BSR**
- **#2,102**
- **Page quality**
- **0%**
- **Prime**
- **68%**
- **Sponsored**
- **77%**
- **Out of stock**
- **38.7%**
- **Avg brand age**
- **18 months**
- **Avg seller age**
- **200 days**
## **Competition & brand share**
Clicks spread well past the top 5 (26% combined) — an open shelf where new products get seen.
**Brands**
**37 **
**Sellers**
**43**
**Top-5 brand share**
**54%**
Top 20: 89%
**Top-5 click share**
**26%**
Top 20: 56%
**Open market**
**41%**
- WYYXXT25% - AOVCLKID13% - FENGLONG-YB7% - Binbo6% - Lgandpg5% - Coolproud5%
## **Demand**
Weekly Amazon search volume, last 36 weeks — -25.4% search growth over the last 90 days.
30K20KHoliday '25Nov '25Dec '25Jan '26Mar '26Apr '26May '26
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/rumi-golden-costume-kids/trend)
## **Top rumi golden costume kids search terms**
- **rumi outfit**60K/yr-7.9%0.5% conv. - **traje de rumi para nias**43K/yr-48.9%0.2% conv. - **rumi golden costume**70K/yr-16.5%0.1% conv. - **rumi costume 4t**25K/yr-4.9%0.4% conv. - **rumi outfit girls**17K/yr-46.7%0.1% conv. - **rumi costume 5t**21K/yr+14.5%0.9% conv. - **rumi golden costume kids**115K/yr-35.1%0.5% conv. - **rumi jacket kids**57K/yr-51.0%0.5% conv. - **rumi costume kids 3t**9K/yr+182.6%0.7% conv. - **rumi toddler costume**24K/yr-6.9%0.7% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/rumi-golden-costume-kids/search-terms)
## **Top rumi golden costume 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%$6K4%$11K6%$17K8%$22K1101001K10K 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**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) [2**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) [3**AOVCLKID Girls Princess Rumi Cartoon Print Flutter Sleeves Dress(4-5 Years Yellow)**AOVCLKID**$19.50**5.0★4 rev](https://www.amazon.com/dp/B0GPCYD2PF) [4**WYYXXT Girls Rumi Princess Cartoon Daily Dress Halloween Birthday Party Outfits(6-7 Years Yellow)**WYYXXT**$23.14**4.2★3 rev](https://www.amazon.com/dp/B0GWXYMX6F) [5**Rumi Costume Kids Girls Kpop Halloween Cosplay 3-4Y**Coolproud**$47.30**4.4★18 rev](https://www.amazon.com/dp/B0FS7BYKYP)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Xefenki Girls Rumi Costume Kids Kpop Halloween Cosplay Costumes 3-4Y**Xefenki**$36.40**7 rev2mo ago](https://www.amazon.com/dp/B0GYFTP1SX) [**WYYXXT Girls Rumi Princess Cartoon Daily Dress Halloween Birthday Party Outfits(6-7 Years Yellow)**WYYXXT**$23.14**3 rev2mo ago](https://www.amazon.com/dp/B0GWXYMX6F) [**AOVCLKID Girls Rumi Princess Loose Comfortable Home Wear Dress 7-8 Years Yellow/Gold**AOVCLKID**$21.18**9 rev4mo ago](https://www.amazon.com/dp/B0GS5PLYF2) [**KPJSDT Girls Stage Costume Jacket Tank Top Shorts Set Printed Halloween Outfit for Kids Party Dress Up**KPJSDT**$34.97**20 rev4mo ago](https://www.amazon.com/dp/B0GS1F3N5D) [**WYYXXT Girls Rumi Princess Cartoon Daily Dress Halloween Birthday Party Pop Outfits(4-5T Yellow)**WYYXXT**$23.54**3 rev4mo ago](https://www.amazon.com/dp/B0GPM4WDL2)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**AOVCLKID Girls Rumi Princess Loose Comfortable Home Wear Dress 7-8 Years Yellow/Gold**AOVCLKID**$21.18**4.8★**▲ 128%**](https://www.amazon.com/dp/B0GS5PLYF2) [**WYYXXT Girls Rumi Princess Cartoon Daily Dress Halloween Birthday Party Outfits(6-7 Years Yellow)**WYYXXT**$23.14**4.2★**▲ 127%**](https://www.amazon.com/dp/B0GWXYMX6F) [**AOVCLKID Girls Princess Rumi Cartoon Print Flutter Sleeves Dress(4-5 Years Yellow)**AOVCLKID**$19.50**5.0★**▲ 126%**](https://www.amazon.com/dp/B0GPCYD2PF) [**Xefenki Girls Rumi Costume Kids Kpop Halloween Cosplay Costumes 3-4Y**Xefenki**$36.40**4.7★**▲ 125%**](https://www.amazon.com/dp/B0GYFTP1SX) [**KPJSDT Girls Stage Costume Jacket Tank Top Shorts Set Printed Halloween Outfit for Kids Party Dress Up**KPJSDT**$34.97**4.5★**▲ 124%**](https://www.amazon.com/dp/B0GS1F3N5D)
**~~View all trending →~~**
## **What buyers say about rumi golden costume kids**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**18%
*“so the size chart is accurate”*
**Quality-Overall**17%
*“Decent quality shirt”*
**Color**6%
*“Color was accurate”*
**Advertised Vs Actual Product**5%
*“Looks just like the pictures”*
**Soft Feel**5%
*“The material feel soft and smooth”*
**Value For Money**4%
*“Worth it”*
**Ease Of Use**3%
*“Ease to use”*
**Gifting Purpose**3%
*“Gift”*
**Durability**2%
*“seems to be pretty durable”*
**Material Quality**2%
*“Soft material”*
### **What buyers complain about **
**Quality-Overall**21%
*“Bad quality”*
**Durability**19%
*“its already cracking”*
**Size-Overall**14%
*“Runs extremely large”*
**Value For Money**5%
*“it is extremely expensive”*
**Material Quality**3%
*“Cheap material”*
**Color**3%
*“the shirt was a different black”*
**Print Quality**3%
*“Poor quality print”*
**Smell**3%
*“Smell is so awful”*
**Strength**2%
*“is fragile”*
**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”*
### **Top return reasons **
**Size-Overall**49%
**Quality-Overall**7%
**Advertised Vs Actual Product**5%
**Defective Material/Parts**5%
**Material Quality**4%
**Durability**3%
**Color**2%
**Suitability Long Hair**2%
**Length**2%
**Value For Money**2%
## **Common questions**
- **Is rumi golden costume kids profitable to sell on Amazon United States?**
- The niche generates $281K/yr across 88 tracked products. 23 of 84 products launched in the last 360 days are still selling. 90-day search growth is -25.4%. Flapen's verdict: Worth a look (57/100).
- **How competitive is the rumi golden costume kids niche?**
- 37 brands and 43 sellers compete. The top 5 products take 26% of clicks and top 5 brands hold 54% of demand.
- **What do buyers complain about in rumi golden costume kids?**
- Top complaints mined from reviews: Quality-Overall, Durability, Size-Overall. The return rate is 6.1% — above our launch gate.
- **What does it cost to enter the rumi golden costume kids niche?**
- Listings span $9.54–$107.45; the average listing price is $36.51 (sweet spot $15–$100). The average incumbent carries 110 reviews — the moat a new listing must climb.
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