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grinch costume adult

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Soft demand (-31.6% this quarter) — this niche doesn't clear our bar today.

Market size 80Growth 9Conversion 10Competition 33Returns 18Price range 69Avg price 95Brand share 59Review moat 91Quality gap 78

Avg price

Incredible$43.14

avg listing price — sweet spot $15–$100

Review moat

Great180.91

avg incumbent reviews — the moat a new listing must climb

Market size

Great$1.1M

$1.1M/yr · 3.4M searches

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Price range

Good$16.51–$137.41

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

Brand share

Good70%

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

Competition

Okay65%

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

Returns

Bad7.7%

return rate — above 6% kills the launch gate

Conversion

Bad0.8%

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

Growth

Bad-31.6%

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

Competition

The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.

Brands

20 falling

Sellers

20

Top-5 brand share

70%

Open market

26%

  • Fun Costumes26%
  • ELOOGOOKIN23%
  • ATESMO11%
  • Adrinfly5%
  • Beita4%
  • WPOZD4%

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%10%$113K20%$226K30%$339K40%$452K1101001K10K 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 & seasonality

Weekly Amazon search volume, last 104 weeks — -31.6% search growth over the last 90 days.
500K300KSpike '24Holiday '24Spike '25Prime Day '25Holiday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Nov, Dec · busiest ÷ quietest = 176.9×

Reviews

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

What buyers love

Value For Money20%

“Its adorable and affordable”

Quality-Overall19%

“This seems to be a quality made mask”

Fun/Entertainment Experience16%

“Great fun”

Size-Overall13%

“It fit perfectly”

Advertised Vs Actual Product9%

“Exactly as described”

Material Quality6%

“The green PJ -like pants were made of polyester, were lightweight, and were very comfy and warm”

Ease Of Use5%

“Easy to put on”

Product Condition2%

“Washed and dried and still looks new”

Soft Feel2%

“Soft, warm, and quality great”

Washability2%

“Great looking and still looks new after washing”

What buyers complain about

Size-Overall28%

“It does not fit correctly”

Color17%

“also the color is off”

Value For Money13%

“not worth the price if youre just needing a mask”

Quality-Overall13%

“Poor quality”

Comfort-Overall8%

“Uncomfortable to wear”

Advertised Vs Actual Product4%

“Costly and did not resemble picture shown”

Functionality-Overall4%

“It sheds a lot which is my biggest issue with it”

Top return reasons

Size-Overall58%
Advertised Vs Actual Product8%
Quality-Overall5%
Value For Money3%
Material Quality3%
Length3%
Color3%
Thigh Fit3%
Defective Material/Parts3%
Comfort-Overall2%