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mary costume for girls

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Soft demand (-74.7% this quarter) — this niche doesn't clear our bar today.

Market size 5Growth 0Conversion 15Competition 46Returns 0Price range 95Avg price 95Brand share 67Review moat 78Quality gap 32

Avg price

Incredible$23.95

avg listing price — sweet spot $15–$100

Price range

Incredible$17.03–$39.56

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

Review moat

Great448.8

avg incumbent reviews — the moat a new listing must climb

Brand share

Good65%

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

Competition

Okay57%

top-5 click share — leaders hold, buyers still browse

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Conversion

Bad1.2%

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

Market size

Bad$22K

$22K/yr · 74K searches

Growth

Bad-74.7%

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

Returns

Bad13.5%

return rate — above 6% kills the launch gate

Competition

The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them.

Brands

11 falling

Sellers

27

Top-5 brand share

65%

Open market

27%

  • HOMELEX19%
  • VZQI14%
  • BluNight Collection11%
  • Morph11%
  • California Costumes10%
  • Fun Costumes8%

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%$1K10%$2K15%$3K20%$4K101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 15 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 103 weeks — -74.7% search growth over the last 90 days.
5K3KPrime Day '24Spike '24Holiday '24Spike '25Prime Day '25Holiday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Oct, Nov, Dec · busiest ÷ quietest = 48.1×

Reviews

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

What buyers love

Quality-Overall50%

“Nicely made costume”

Size-Overall27%

“It fit well”

Advertised Vs Actual Product10%

“As advertised”

Transparency7%

“just thick enough that it's not see through”

Thickness7%

“just thick enough that it's not see through”

Top return reasons

Size-Overall71%
Length11%
Material Quality4%
Color3%
Product Condition3%
Advertised Vs Actual Product2%
Chest Fit2%
Quality-Overall1%
Shape/Style1%
Functionality-Overall1%