rumi cosplay
Skip itHigh returns (16.9%) — this niche doesn't clear our bar today.
Quality gap
Incredible3.8★avg incumbent rating — lower means beatable quality
Review moat
Incredible57.77avg incumbent reviews — the moat a new listing must climb
Price range
Incredible$21.47–$97.08cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Great$64.70avg listing price — sweet spot $15–$100
Competition
Good52%top-5 click share — leaders hold, buyers still browse
Market size
Okay$187K$187K/yr · 401K searches
Brand share
Okay88%top-5 brand share — brands hold most of the demand
Growth
Bad-12.9%90-day search growth — must beat 0% to launch
Conversion
Bad0.7%search→purchase rate — share of searches ending in a sale
Returns
Bad16.9%return rate — above 5% kills the launch gate
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
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.Top rumi cosplay search terms
- rumi costume adult75K/yr
- rumi cosplay74K/yr
- rumi adult costume42K/yr
- rumi costume women93K/yr
- adult rumi costume20K/yr
- rumi kpop demon hunters costume adult15K/yr
- rumi costume adult women10K/yr
- rumi costume adults7K/yr
- rumi costume for adults4K/yr
- womens rumi costume8K/yr
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.
All 22 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
OSIAS Women Rumi Cosplay Costume Golden Stage Outfit Black With Sequined Design (XL)
OSIAS$94.413.4★8 rev
Linnektome Costume Uniform Dress Full Set For Women Party Outfit
Linnektome$48.573.4★61 rev
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$71.514.5★18 rev
ZBDFNJ Womens Role-Playing Costumes Complete Costumes and Accessories Halloween Costumes
ZBDFNJ$57.263.8★32 rev
OSIAS Women Rumi Cosplay Costume Golden Stage Outfit Black With Sequined Design (M)
OSIAS$93.193.4★8 rev
Newest
by launch date
FENGLONG-YB Costume Cosplay Golden For Girls Women With Wigs Halloween Top Pants Full Set Outfit
FENGLONG-YB$74.7895 rev
KPop Demon Hunters Rumis Yellow Jacket Unisex Anime-Inspired Cosplay & Streetwear Fashion Coat - Officially Licensed - Large
KPop Demon Hunters$87.7812 rev
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$21.4738 rev
OSIAS Women Rumi Cosplay Costume Golden Stage Outfit Black With Sequined Design (XL)
OSIAS$94.418 rev
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$71.5118 rev
Trending
90-day click momentumKPop Demon Hunters Rumis Yellow Jacket Unisex Anime-Inspired Cosplay & Streetwear Fashion Coat - Officially Licensed - Large
KPop Demon Hunters$87.784.7★
Linnektome Costume Uniform Dress Full Set For Women Party Outfit
Linnektome$48.573.4★
Linnektome Costume Uniform Dress Full Set For Women Party Outfit
Linnektome$48.353.4★
OSIAS Women Rumi Cosplay Costume With Leather Stretch Shorts and Padded Shoulder Jacket (XXL)
OSIAS$85.644.4★
FENGLONG-YB Costume Cosplay Golden For Girls Women With Wigs Halloween Top Pants Full Set Outfit
FENGLONG-YB$74.783.6★
What buyers say about rumi cosplay
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality for costume”
“Fits and looks great”
“it was pretty easy to use that way”
“Great wig piece”
“its so worth it”
“Great quality material”
“Its very soft and quite beautiful,”
“The braid is really thick which is nice”
“This one has stretchy type shorts”
“the tailor did a great job adjusting it”
What buyers complain about
“Too big”
“is too heavy”
“Not quality”
“The wig messed up completely”
“Belt snapped when I tried it on”
“It didn't come with the embroidery shown in the photo and video”
“Smelled awful”
“Misleading product”
“just did not work”
“Oh and the material on the white part of the costume is all cheap plastic”
Top return reasons
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.