Ninja Costume
FailBuyers convert on only 1.4% of searches, so Ninja Costume is a Fail.
- Flapen Score
- 43 / 100Ranks 9,936 of 16,930 Clothing, Shoes & Jewelry niches · −2 vs the category median of 4543
- Market size
- $431K/yr1.0M searches / yr
- 90-day growth
- -11.3%search demand this quarter
- Competition
- 49%top-5 click share · 14 brands · 32 sellers
Flapen Score
Ninja Costume against its category
The dotted line is the Clothing, Shoes & Jewelry average. Past it, Ninja Costume is stronger. Inside it, weaker.
Market
The Ninja Costume market on Amazon at a glance
Shoppers on Amazon United States searched for Ninja Costume 1.0M times last year and spent an estimated $431K. The top 5 brands take 81% of clicks. Demand peaks in Sep–Oct. Flapen scores it 43 out of 100, a Fail.
01 · Demand
An estimated 1.4% of those searches ended in a purchase.
Shoppers searched for this 1.0M times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 1.4% of those searches ended in a purchase. Searches in the last 90 days moved -11.3% against the 90 days before. Searches, conversion and average price together put the market at an estimated $431K a year.
- Searches, last 12 months
- 1.0M
- Growth, 90 days vs prior 90
- -11.3%
- Conversion, latest week
- 1.4%
- Market size, estimated
- $431Ka year
- Peak month
- October26.2× the quietest month
- Top search term
- ninja costume359K searches a year
02 · Price
A sale here is worth $31.29.
Listings sell for $31.29 on average, from $13.28 to $58.11. Amazon reports units sold in ranges. This niche sold 13K to 15K a year. The average listing sells 250 to 500 of them. At $31.29 that is $8K to $16K a year per listing.
- Average price
- $31.29inside the $15 to $100 sweet spot
- Price range
- $13.28–$58.11
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 13K–15K
- Units per listing a year
- 250–500
- Revenue per listing a year
- $8K–$16K
- Returns
- 6.6%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
81% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 9.3% of listings are out of stock. The average listing ranks #1,018 within Boys. It carries 2,715 reviews at 4.52 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 81%
- Prime listings
- 100%
- Out of stock, average day
- 9.3%
- Average rank
- #1,018in Boys
- Average rating
- 4.52 starsAmazon United States average 4.42 stars
- Average reviews
- 2,715per listing
- Listings tracked
- 31
04 · Newcomers
0 of last year's 2 launches cleared the first-year sales bar.
2 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 51 months on average, so the names here are settling in.
- Launched, last 12 months
- 2
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 51 months
Products
Top Ninja Costume products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 10, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Spooktacular Creations Halloween Ninja Costume Black Ninja Outfit Set for Kids Halloween Costumes with Accessories for Boys Dress Up and Role Play Party (Small 5-7 yrs)
- Price
- $28.57
- Rating
- 4.7/5
- Reviews
- 10,729
- Age
- 8y ago

Mens Black Ninja Costume Japanese Samurai Swordsman Uniform Suit Halloween Cosplay Outfit
- Price
- $39.63
- Rating
- 4.3/5
- Reviews
- 16
- Age
- 1y ago

Spooktacular Creations Halloween Ninja Costume Kids Black Red Ninja Dragon Jumpsuit Set Boys Halloween Costume for DressUp and RolePlay Party (Small 5-7 yrs)
- Price
- $31.20
- Rating
- 4.6/5
- Reviews
- 4,066
- Age
- 6y ago

Spooktacular Creations Golden Ninja Costume Set Ninja Jumpsuit with Foam Accessories for Kids Toddler Halloween Outfit for Ideas Cosplay Party (Small 5-7 yrs)
- Price
- $32.66
- Rating
- 4.6/5
- Reviews
- 1,377
- Age
- 5y ago

Ninjia Costume for Boys & Girls - Kids Ninja Costume Suit with Deluxe Ninja Toys for Halloween Cospaly Role Playing (Gold & Black) 6-7 Years
- Price
- $33.14
- Rating
- 4.6/5
- Reviews
- 280
- Age
- 2y ago
Trending
estimated 90-day click momentum
Elite Sports IBJJF Ultra Light BJJ Brazilian Jiu Jitsu Gi for Kids with Preshrunk Fabric and Free Belt (Green 1)
- Price
- $44.22
- Rating
- 4.8/5
- Reviews
- 5,654
- Age
- 8y ago

ReliBeauty Green Ninja Kids Costume for Boys suit with Deluxe Ninja Accessories 120
- Price
- $38.03
- Rating
- 4.6/5
- Reviews
- 9
- Age
- 5mo ago

Mens Black Ninja Costume Japanese Samurai Swordsman Uniform Suit Halloween Cosplay Outfit
- Price
- $39.63
- Rating
- 4.3/5
- Reviews
- 16
- Age
- 1y ago

Mens Black Ninja Costume Japanese Samurai Swordsman Uniform Suit Halloween Cosplay Outfit
- Price
- $39.29
- Rating
- 4.3/5
- Reviews
- 16
- Age
- 1y ago

TOKYO REVENGERS Men Medieval Renaissance Pirate Costume Knight Cosplay Outfit LARP Costume Accessories Set (BK 2XL)
- Price
- $35.63
- Rating
- 3.4/5
- Reviews
- 67
- Age
- 1y ago
Newest
by launch date
ReliBeauty Green Ninja Kids Costume for Boys suit with Deluxe Ninja Accessories 120
- Price
- $38.03
- Rating
- 4.6/5
- Reviews
- 9
- Age
- 5mo ago

California Costumes Boys Ninja-X Scorpion Strike Size M
- Price
- $38.58
- Rating
- 4.4/5
- Reviews
- 3
- Age
- 11mo ago

Mens Black Ninja Costume Japanese Samurai Swordsman Uniform Suit Halloween Cosplay Outfit
- Price
- $39.63
- Rating
- 4.3/5
- Reviews
- 16
- Age
- 1y ago

Mens Black Ninja Costume Japanese Samurai Swordsman Uniform Suit Halloween Cosplay Outfit
- Price
- $39.29
- Rating
- 4.3/5
- Reviews
- 16
- Age
- 1y ago

TOKYO REVENGERS Men Medieval Renaissance Pirate Costume Knight Cosplay Outfit LARP Costume Accessories Set (BK 2XL)
- Price
- $35.63
- Rating
- 3.4/5
- Reviews
- 67
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 49% of clicks. Leaders hold, but buyers still shop past them.
Brands
14 falling
Sellers
32
Est. top-5 brand share
81%
Top 20: 100%
Est. top-5 click share
49%
Top 20: 87%
Open market
15%
- Spooktacular Creations46%
- GRACEART16%
- Bosvin10%
- California Costumes5%
- Missanabie4%
- SATKULL4%
- Open — no brand owns it (8 brands, 15%)
Demand
Ninja Costume search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Sep, Oct · busiest ÷ quietest = 26.2×
Search terms
Top Ninja Costume search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- ninja costume359K/yr
- ninja costume kids270K/yr
- ninja costume kids 6-853K/yr
- kids ninja costume65K/yr
- ninja outfit21K/yr
- ninja suit17K/yr
- ninja costumes29K/yr
- ninja costume 4-6 years4K/yr
- ninja suit for kids7K/yr
- ninja outfit kids4K/yr
Reviews and returns
What reviews say buyers love and hate about Ninja Costume
We read the reviews and the return reasons for every product selling here.
“Fit was a bit large”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
18 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Ninja Costume questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









