shadow costume
Skip itWeak search conversion (0.1%) — this niche doesn't clear our bar today.
Avg price
Incredible$37.40avg listing price — sweet spot $15–$100
Price range
Incredible$19.51–$79.10cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great186.06avg incumbent reviews — the moat a new listing must climb
Competition
Good44%top-5 click share — leaders hold, buyers still browse
Returns
Okay4.3%return rate — above 5% kills the launch gate
Brand share
Okay89%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Growth
Bad-14.0%90-day search growth — must beat 0% to launch
Market size
Bad$20K$20K/yr · 378K searches
Conversion
Bad0.1%search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United States niche tracking, shadow costume is a $20K/yr Amazon United States market (378K searches/yr). The top 5 brands hold 89% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 37/100.
Data updated Jul 10, 2026 · scored weekly · How we score niches
shadow costume market data
- Units sold / yr
- 3K–3K
- avg 100–250/product
- Revenue / yr
- $94K–$112K
- units × avg price
- Conversion rate
- 0.1%
- Avg BSR
- #15,339
- Page quality
- 0%
- Prime
- 73%
- Sponsored
- 55%
- Out of stock
- 29.5%
- Avg brand age
- 40 months
- Avg seller age
- 137 days
Competition & brand share
The top 5 products take 44% of clicks — established leaders, but buyers still shop beyond them.Brands
9 rising
Sellers
33
Top-5 brand share
89%
Top 20: 100%
Top-5 click share
44%
Top 20: 89%
Open market
7%
- Komar Kids35%
- Disguise26%
- SEGA15%
- Opposuits9%
- Spirit Halloween4%
- Loromodo4%
- Open — no brand owns it (3 brands, 7%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -14.0% search growth over the last 90 days.Peak months: Sep, Oct · busiest ÷ quietest = 24.3×
Top shadow costume search terms
- shadow costume60K/yr
- shadow the hedgehog costume125K/yr
- shadow costume kids52K/yr
- shadow the hedgehog onesie10K/yr
- shadow onesie10K/yr
- sonic shadow costume20K/yr
- shadow sonic costume13K/yr
- shadow costume for boys 4-616K/yr
- shadow costume sonic3K/yr
- sonic shadow costume kids7K/yr
Top shadow costume products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Shadow Kids Onesie Pajamas - Boys Long Sleeve Zip Up Hooded Blanket Sleep - One Piece Costume - Official License
Komar Kids$26.054.8★129 rev
Shadow Kids Onesie Pajamas - Boys Long Sleeve Zip Up Hooded Blanket Sleep - One Piece Costume - Official License
Komar Kids$25.594.8★129 rev
SEGA Boys Sonic The Hedgehog Shadow Costume Zip Up Fleece Hoodie - 4-20 Sweatshirt Shadow (Black) 7 US
SEGA$32.214.5★154 rev
Disguise Sonic 3 Shadow Costume Official Sonic Movie 3 Costume for Kids Large (10-12)
Disguise$29.514.6★112 rev
SEGA Boys Sonic The Hedgehog Shadow Costume Zip Up Fleece Hoodie - 4-20 Sweatshirt Shadow (Black) 10-12 US
SEGA$33.084.5★154 rev
Newest
by launch dateShadow Kids Onesie Pajamas - Boys Long Sleeve Zip Up Hooded Blanket Sleep - One Piece Costume - Official License
Komar Kids$26.05129 rev
Shadow Kids Onesie Pajamas - Boys Long Sleeve Zip Up Hooded Blanket Sleep - One Piece Costume - Official License
Komar Kids$25.59129 rev
Shadow Kids Onesie Pajamas - Boys Long Sleeve Zip Up Hooded Blanket Sleep - One Piece Costume - Official License
Komar Kids$25.33129 rev
Shadow Kids Onesie Pajamas - Boys Long Sleeve Zip Up Hooded Blanket Sleep - One Piece Costume - Official License
Komar Kids$25.49129 rev
Rubies Sonic The Hedgehog: Shadow Deluxe Kids Costume for Kids Boys Medium
Rubies$48.2129 rev
Trending
90-day click momentumSEGA Boys Sonic The Hedgehog Shadow Costume Zip Up Fleece Hoodie - 4-20 Sweatshirt Shadow (Black) 10-12 US
SEGA$33.084.5★
Unisex Adult Animal Onesie Pajamas One Piece Cosplay Costume for Halloween Blue
Dreamicorn$28.724.5★
Shadow Kids Onesie Pajamas - Boys Long Sleeve Zip Up Hooded Blanket Sleep - One Piece Costume - Official License
Komar Kids$25.594.8★
Shadow Kids Onesie Pajamas - Boys Long Sleeve Zip Up Hooded Blanket Sleep - One Piece Costume - Official License
Komar Kids$26.054.8★
Loromodo White Black Sneakers for Boys Girls Shoes Running Birthday Gift Tennis Costume Shoes
Loromodo$44.784.5★
What buyers say about shadow costume
What buyers praise and complain about, mined from review topics.What buyers love
“The size was just right for my son”
“Good quality”
“comfortable”
“They are so soft”
“keeps her warm”
“As advertised”
“Great material”
“Durable, warm and cozy”
“easy to wash”
“Thick quality material and good fit”
What buyers complain about
“Inconsistent sizes, all one size despite what label says, too small”
“It's falls off a little too easily”
“I was worried the material would feel cheap”
“2 washes on hot. he gets dirty”
Top return reasons
Common questions
- Is shadow costume profitable to sell on Amazon United States?
- The niche generates $20K/yr across 33 tracked products. 0 of 9 products launched in the last 360 days are still selling. 90-day search growth is -14.0%. Flapen's verdict: Skip it (37/100).
- How competitive is the shadow costume niche?
- 9 brands and 33 sellers compete. The top 5 products take 44% of clicks and top 5 brands hold 89% of demand.
- What do buyers complain about in shadow costume?
- Top complaints mined from reviews: Size-Overall, Durability, Material Quality. The return rate is 4.3%.
- When does demand for shadow costume peak?
- Demand peaks in Sep–Oct; the busiest month runs 24.3× the quietest.
- What does it cost to enter the shadow costume niche?
- Listings span $19.51–$79.10; the average listing price is $37.40 (sweet spot $15–$100). The average incumbent carries 186 reviews — the moat a new listing must climb.