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karate kid costume

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A small market ($30K/yr) — this niche doesn't clear our bar today.

Market size 7Growth 18Conversion 21Competition 91Returns 13Price range 83Avg price 95Brand share 93Review moat 63Quality gap 62

Avg price

Incredible$29.36

avg listing price — sweet spot $15–$100

Brand share

Great42%

top-5 brand share — no brand owns this niche

Competition

Great24%

top-5 click share — an open shelf

Price range

Great$7.19–$58.11

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

Review moat

Good977.63

avg incumbent reviews — the moat a new listing must climb

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Conversion

Bad1.6%

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

Growth

Bad-14.9%

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

Returns

Bad8.8%

return rate — above 6% kills the launch gate

Market size

Bad$30K

$30K/yr · 61K searches

Competition

Clicks spread well past the top 5 (24% combined) — an open shelf where new products get seen.

Brands

37 rising

Sellers

66

Top-5 brand share

42%

Open market

53%

  • Elite Sports14%
  • NAMAZU11%
  • Hawk Sports7%
  • Rubies5%
  • ULTIMATE FIGHT GEAR5%
  • Treyrea5%

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%2%$5924%$1K6%$2K8%$2K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)2 products missing review or click data not plotted

All 79 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -14.9% search growth over the last 90 days.
10K6KPrime Day '24Spike '24Spike '25Prime Day '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Sep, Oct, Nov · busiest ÷ quietest = 24.5×

Reviews

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

What buyers love

Size-Overall27%

“true to size”

Quality-Overall19%

“Great quality for the pricing”

Material Quality9%

“Good material”

Durability6%

“doesn't ever tear”

Value For Money6%

“Worth the money”

Comfort-Overall6%

“comfortable”

Weight Light5%

“a lot lighter than I anticipated”

Color2%

“I love the color”

Shrinkage Resistance2%

“Does not shrink”

Breathability1%

“Its breathable enough to keep kids comfortable during long practices”

What buyers complain about

Size-Overall42%

“Size runs SMALL”

Value For Money4%

“Priced for a reason”

Advertised Vs Actual Product4%

“Not same like in the kobra kai series”

Material Quality4%

“Thin materia and the fit is not right”

Product Condition3%

“supposedly brand new”

Thin2%

“Thin material”

Quality-Overall2%

“Ill buy a higher quality one once she decides if shes sticking to it”

Suitability Hot Weather1%

“The material is light on hot gym days”

Hard Feel1%

“Not quite as soft as I though it would be”

Length1%

“They were a little long”

Top return reasons

Size-Overall81%
Material Quality3%
Color3%
Advertised Vs Actual Product3%
Thin2%
Length2%
Value For Money1%
Sleeve Fit1%
Quality-Overall1%
Waist Fit1%