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sarah sanderson costume girls

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A small market ($0/yr) — this niche doesn't clear our bar today.

Market size 0Growth 37Conversion 0Competition 0Returns 24Price range 95Avg price 95Brand share 0Review moat 92Quality gap 95

Quality gap

Incredible4.0★

avg incumbent rating — lower means beatable quality

Avg price

Incredible$43.86

avg listing price — sweet spot $15–$100

Price range

Incredible$21.02–$65.85

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

Review moat

Great165

avg incumbent reviews — the moat a new listing must climb

Growth

Okay+9.3%

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

Returns

Bad6.3%

return rate — above 6% kills the launch gate

Market size

Bad$0

$0/yr · 33K searches

Conversion

Bad0.0%

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

Competition

Bad100%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Competition

The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.

Brands

3 rising

Sellers

4

Top-5 brand share

100%

Open market

0%

  • Fun Costumes57%
  • Taeyue26%
  • Spirit Halloween18%

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%15%$030%$045%$060%$01101001K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 3 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 94 weeks — +9.3% search growth over the last 90 days.
13K8KSpike '24Spike '25Prime Day '25Spike '26SepDecJunAug

Peak months: Sep, Oct · busiest ÷ quietest = 395.4×