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thing 1 and thing 2 costumes kids

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

Market size 0Growth 0Conversion 0Competition 80Returns 29Price range 82Avg price 95Brand share 74Review moat 79Quality gap 60

Avg price

Incredible$27.61

avg listing price — sweet spot $15–$100

Price range

Great$9.44–$110.87

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

Competition

Great35%

top-5 click share — an open shelf

Review moat

Great426.89

avg incumbent reviews — the moat a new listing must climb

Brand share

Good60%

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Returns

Okay5.6%

return rate — above 6% kills the launch gate

Market size

Bad$0

$0/yr · 136K searches

Growth

Bad-89.4%

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

Conversion

Bad0.0%

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

Competition

Clicks spread well past the top 5 (35% combined) — an open shelf where new products get seen.

Brands

21 rising

Sellers

23

Top-5 brand share

60%

Open market

35%

  • Seven Times Six35%
  • Mad Engine7%
  • elope7%
  • Jazwares Costume Play6%
  • Mighty Fine5%
  • PATCHUPS4%

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%$06%$09%$012%$01101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 36 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 88 weeks — -89.4% search growth over the last 90 days.
20K15KSpike '25Spike '26DecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun

Peak months: Mar, Sep, Oct, Nov · busiest ÷ quietest = 76.9×

Reviews

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

What buyers love

Size-Overall19%

“Fit well”

Quality-Overall16%

“Fine quality”

Value For Money14%

“The price is very reasonable”

Ease Of Use8%

“Easy to use”

Advertised Vs Actual Product7%

“As Described”

Color4%

“color was good”

Soft Feel4%

“very soft”

Material Quality4%

“Great material”

Print Quality3%

“Great print”

Gifting Purpose2%

“They were perfect for Dr. Seuss birthday event though”

What buyers complain about

Size-Overall28%

“they are way too big”

Quality-Overall8%

“Accessories are poor quality”

Color7%

“The white backing disappears to show the color of the shirt underneath”

Durability7%

“broke right away”

Value For Money6%

“I generally don't like paying that much for a character shirt for a toddler”

Functionality-Overall3%

“Did not work”

Advertised Vs Actual Product3%

“Incorrect advertising”

Print Quality2%

“The prints already cracked and peeling, I JUST freaking got them”

Thin2%

“Cheap and thin”

Breathability2%

“not very breathable”

Top return reasons

Size-Overall64%
Length9%
Print Quality3%
Chest Fit3%
Advertised Vs Actual Product3%
Quality-Overall3%
Value For Money2%
Material Quality2%
Color2%
Waist Fit1%