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spongebob costume kids

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A small market ($8K/yr) — this niche doesn't clear our bar today.

Market size 2Growth 20Conversion 3Competition 82Returns 21Price range 85Avg price 95Brand share 51Review moat 85Quality gap 21

Avg price

Incredible$29.07

avg listing price — sweet spot $15–$100

Review moat

Great290.69

avg incumbent reviews — the moat a new listing must climb

Price range

Great$5.42–$83.06

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

Competition

Great33%

top-5 click share — an open shelf

Brand share

Good74%

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

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Returns

Bad7.0%

return rate — above 6% kills the launch gate

Growth

Bad-9.9%

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

Conversion

Bad0.2%

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

Market size

Bad$8K

$8K/yr · 141K searches

Competition

Clicks spread well past the top 5 (33% combined) — an open shelf where new products get seen.

Brands

15 rising

Sellers

32

Top-5 brand share

74%

Open market

21%

  • SPONGEBOB SQUAREPANTS27%
  • Jazwares Costume Play24%
  • Nickelodeon11%
  • Spirit Halloween7%
  • Rubies6%
  • Zando5%

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%$2466%$4929%$73812%$9841101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 45 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 91 weeks — -9.9% search growth over the last 90 days.
25K15KSpike '24Spike '25Spike '26NovDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun

Peak months: Sep, Oct · busiest ÷ quietest = 86.8×

Reviews

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

What buyers love

Quality-Overall46%

“Good Quality and Arrived On time”

Size-Overall19%

“fit was good”

Durability12%

“Durable”

Advertised Vs Actual Product8%

“As described”

Value For Money8%

“Worth the price very fast”

Soft Feel4%

“This is soooo Soft and Cute, Cute”

What buyers complain about

Size-Overall50%

“its much larger than I expected”

Soft Feel20%

“I only subtracted one star because the fabric isn't very soft”

Material Quality20%

“Very slippery material”

Top return reasons

Size-Overall60%
Length11%
Advertised Vs Actual Product3%
Product Condition3%
Feet Fit3%
Comfort-Overall3%
Quality-Overall3%
Material Quality2%
Value For Money2%
Color1%