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baby mario costume

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A small market ($31K/yr) — this niche doesn't clear our bar today.

Market size 8Growth 60Conversion 10Competition 82Returns 11Price range 86Avg price 95Brand share 52Review moat 73Quality gap 28

Avg price

Incredible$25.80

avg listing price — sweet spot $15–$100

Price range

Great$11.01–$47.01

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

Competition

Great33%

top-5 click share — an open shelf

Review moat

Good595.25

avg incumbent reviews — the moat a new listing must climb

Growth

Good+36.0%

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

Brand share

Good74%

top-5 brand share — brands hold most of the demand

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Returns

Bad9.4%

return rate — above 6% kills the launch gate

Conversion

Bad0.8%

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

Market size

Bad$31K

$31K/yr · 147K searches

Competition

Clicks spread well past the top 5 (33% combined) — an open shelf where new products get seen.

Brands

14 rising

Sellers

68

Top-5 brand share

74%

Open market

19%

  • Disguise32%
  • Super Mario13%
  • VINUOKER11%
  • Gakizon10%
  • Mavoka8%
  • IIMMER7%

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%3%$9246%$2K9%$3K12%$4K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)6 products missing review or click data not plotted

All 53 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +36.0% search growth over the last 90 days.
20K15KSpike '24Spike '25Prime Day '25Holiday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Sep, Oct · busiest ÷ quietest = 60.9×

Reviews

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

What buyers love

Size-Overall20%

“Fit is snug as expected”

Quality-Overall11%

“* Good quality for kids”

Value For Money7%

“Great value for such an affordable”

Ease Of Use6%

“Simple”

Comfort-Overall5%

“are very comfortable”

Soft Feel5%

“The fabric was soft”

Color5%

“the colors are accurate”

Material Quality4%

“The material is not cheaply made”

Design-Overall4%

“* Cute character design”

Durability3%

“durable”

What buyers complain about

Size-Overall18%

“They seem large”

Product Condition10%

“It looks previously used”

Value For Money7%

“I just assumed since it was a little expensive that it would be a higher quality costume”

Quality-Overall5%

“Not good quality at all”

Thickness5%

“thin”

Advertised Vs Actual Product5%

“Does not come with the white gloves pictured so its a bit misleading”

Stretchability/Expandability/Elasticity4%

“this barely stretched enough to fit him”

Functionality-Overall3%

“It doesn't work”

Inflation/Deflation3%

“the fan does not work after a few wears to keep inflated”

Comfort-Overall3%

“were also quite snug where it was uncomfortable for him”

Top return reasons

Size-Overall67%
Length6%
Product Condition5%
Material Quality4%
Advertised Vs Actual Product3%
Quality-Overall3%
Value For Money2%
Defective Material/Parts2%
Stitch/Finish/Polish1%
Thin1%