sans costume
Skip itA small market ($0/yr) — this niche doesn't clear our bar today.
Avg price
Incredible$27.26avg listing price — sweet spot $15–$100
Review moat
Great119.26avg incumbent reviews — the moat a new listing must climb
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Price range
Great$7.24–$42.15cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Okay77%top-5 brand share — brands hold most of the demand
Competition
Okay58%top-5 click share — leaders hold, buyers still browse
Growth
Okay+15.2%90-day search growth — must beat 0% to launch
Returns
Okay4.8%return rate — above 5% kills the launch gate
Market size
Bad$0$0/yr · 59K searches
Conversion
Bad0.0%search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United States niche tracking, sans costume is a $0/yr Amazon United States market (59K searches/yr). The top 5 brands hold 77% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 42/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
sans costume market data
- Units sold / yr
- 500–750
- avg 0–100/product
- Revenue / yr
- $14K–$20K
- units × avg price
- Conversion rate
- 0.0%
- Avg BSR
- #38,049
- Page quality
- 0%
- Prime
- 83%
- Sponsored
- 61%
- Out of stock
- 24.9%
- Avg brand age
- 55 months
- Avg seller age
- 198 days
Competition & brand share
The top 5 products take 58% of clicks — established leaders, but buyers still shop beyond them.Brands
13 falling
Sellers
15
Top-5 brand share
77%
Top 20: 100%
Top-5 click share
58%
Top 20: 96%
Open market
19%
- YJCOS45%
- Blulu14%
- Emisorn7%
- OTPEH6%
- Nsoking5%
- UPUPCOS4%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +15.2% search growth over the last 90 days.Peak months: Sep, Oct · busiest ÷ quietest = 33.3×
Top sans costume search terms
- sans costume31K/yr
- sans cosplay6K/yr
- undertale costume12K/yr
- sans undertale costume6K/yr
- sans costume kids4K/yr
Top sans 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 23 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Adult Costume Hoodie Jacket Coat Halloween Sweatshirt Pullover with Mask
YJCOS$35.694.3★51 rev
Blulu 2 Pairs Halloween Skeleton Gloves Stockings Set Skeleton Knee Thigh High Stocks and Full Finger Bones Long Arm Gloves
Blulu$13.074.4★370 rev
YJCOS Blue Jacket Hoodie Pullover Halloween Unisex Adult Outwear
YJCOS$30.334.3★32 rev
YJCOS Blue Jacket Hoodie Pullover Halloween Unisex Adult Outwear
YJCOS$30.354.3★32 rev
Nsoking Anime Mens Blue Cosplay Costume Mens Jacket Halloween Outfit Polyester Hoodie Coat (Blue Large)
Nsoking$39.314.5★4 rev
Newest
by launch date
ATHX Kids High Stretch Halloween Cosplay Party Bodysuit Costume Child Spandex Back Zipper Headless Zentai Skin Suit Unitard
ATHX$28.8615 rev
AwwwCos Cosplay Costume Casual Sweatshirt Blue Coat Sportswear Men Halloween Party Roleplay Outfit M
AwwwCos$39.990 rev
YJCOS Blue Jacket Hoodie Pullover Halloween Unisex Adult Outwear
YJCOS$30.3332 rev
YJCOS Blue Jacket Hoodie Pullover Halloween Unisex Adult Outwear
YJCOS$30.3532 rev
YJCOS Blue Jacket Hoodie Pullover Halloween Unisex Adult Outwear
YJCOS$29.4432 rev
Trending
90-day click momentumATHX Kids High Stretch Halloween Cosplay Party Bodysuit Costume Child Spandex Back Zipper Headless Zentai Skin Suit Unitard
ATHX$28.864.5★
Men Cosplay Costume Halloween Carnival Costume Outfit Full Set for Girls Women
CIYASHEH$27.693.2★
YJCOS Blue Jacket Hoodie Pullover Halloween Unisex Adult Outwear
YJCOS$30.354.3★
Adult Costume Hoodie Jacket Coat Halloween Sweatshirt Pullover with Mask
YJCOS$35.364.3★
Emisorn Adult Blue Hoodie Mens Coat Sweatshirt Halloween Outfits Plush Coat
Emisorn$32.904.3★
What buyers say about sans costume
What buyers praise and complain about, mined from review topics.What buyers love
“Great price, good quality”
“As described, stocking stuffers for granddaughter, she was pleased”
“They fit well”
“So cute and comfy and I recommend for smaller children maybe 10-16”
“Great price, good quality”
“super durable and resistant”
“So shiny so Strong”
“absolutely love, quality is thick”
“breatheable and the stretch is amazing and, the compatibility is actually really good and its so worth the price”
“breatheable and the stretch is amazing and, the compatibility is actually really good and its so worth the price”
What buyers complain about
“small, way smaller than I thought they'd be”
Top return reasons
Common questions
- Is sans costume profitable to sell on Amazon United States?
- The niche generates $0/yr across 23 tracked products. 90-day search growth is +15.2%. Flapen's verdict: Skip it (42/100).
- How competitive is the sans costume niche?
- 13 brands and 15 sellers compete. The top 5 products take 58% of clicks and top 5 brands hold 77% of demand.
- What do buyers complain about in sans costume?
- Top complaints mined from reviews: Size-Overall. The return rate is 4.8%.
- When does demand for sans costume peak?
- Demand peaks in Sep–Oct; the busiest month runs 33.3× the quietest.
- What does it cost to enter the sans costume niche?
- Listings span $7.24–$42.15; the average listing price is $27.26 (sweet spot $15–$100). The average incumbent carries 119 reviews — the moat a new listing must climb.