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rumi cosplay

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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

Incredible3.8★

avg incumbent rating — lower means beatable quality

Review moat

Incredible57.77

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

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 6% kills the launch gate

Competition

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%

Open market

7%

  • OSIAS43%
  • Linnektome14%
  • Cosfun12%
  • Spirit Halloween10%
  • ZBDFNJ9%
  • KPop Demon Hunters5%
  • Open — no brand owns it (5 brands, 7%)

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%5%$9K10%$19K15%$28K20%$37K1101001K Reviews — right = deep review moat Market 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.

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

Reviews

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

What buyers love

Quality-Overall29%

“Good quality for costume”

Size-Overall18%

“Fits and looks great”

Ease Of Use6%

“it was pretty easy to use that way”

Wig/Artificial Hair Quality5%

“Great wig piece”

Value For Money4%

“its so worth it”

Material Quality4%

“Great quality material”

Soft Feel3%

“Its very soft and quite beautiful,”

Thickness3%

“The braid is really thick which is nice”

Stretchability/Expandability/Elasticity3%

“This one has stretchy type shorts”

Adjustability/Rotatability/Reclining2%

“the tailor did a great job adjusting it”

What buyers complain about

Size-Overall24%

“Too big”

Weight Heavy18%

“is too heavy”

Quality-Overall13%

“Not quality”

Wig/Artificial Hair Quality6%

“The wig messed up completely”

Durability5%

“Belt snapped when I tried it on”

Embellishment/Embroidery Quality4%

“It didn't come with the embroidery shown in the photo and video”

Smell4%

“Smelled awful”

Advertised Vs Actual Product3%

“Misleading product”

Functionality-Overall3%

“just did not work”

Material Quality2%

“Oh and the material on the white part of the costume is all cheap plastic”

Top return reasons

Size-Overall67%
Wig/Artificial Hair Quality6%
Advertised Vs Actual Product5%
Quality-Overall3%
Sleeve Fit3%
Weight Heavy3%
Length2%
Waist Fit2%
Defective Material/Parts1%
Value For Money1%