Ninja Costume
FailDemand is soft, at -79.4% this quarter, so Ninja Costume is a Fail.
- Flapen Score
- 44 / 100Ranks 850 of 1,773 Toys & Games niches · on the category median44
- Market size
- £49K/yr159K searches / yr
- 90-day growth
- -79.4%search demand this quarter
- Competition
- 36%top-5 click share · 16 brands · 33 sellers
Flapen Score
Ninja Costume against its category
The dotted line is the Toys & Games average. Past it, Ninja Costume is stronger. Inside it, weaker.
Market
The Ninja Costume market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for Ninja Costume 159K times last year and spent an estimated £49K. The top 5 brands take 70% of clicks. Demand peaks in Mar–Oct–Nov. Flapen scores it 44 out of 100, a Fail.
01 · Demand
An estimated 1.7% of those searches ended in a purchase.
Shoppers searched for this 159K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 1.7% of those searches ended in a purchase. Searches in the last 90 days moved -79.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated £49K a year.
- Searches, last 12 months
- 159K
- Growth, 90 days vs prior 90
- -79.4%
- Conversion, latest week
- 1.7%
- Market size, estimated
- £49Ka year
- Peak month
- October17.9× the quietest month
- Top search term
- ninja costume kids66K searches a year
02 · Price
A sale here is worth £17.78.
Listings sell for £17.78 on average, from £6.00 to £33.34. Amazon reports units sold in ranges. This niche sold 3K to 3K a year. The average listing sells 0 to 100 of them. At £17.78 that is £0 to £2K a year per listing.
- Average price
- £17.78inside the $15 to $100 sweet spot
- Price range
- £6.00–£33.34
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 3K–3K
- Units per listing a year
- 0–100
- Revenue per listing a year
- £0–£2K
- Returns
- 2.9%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is low.
83% of listings pay for placement with sponsored ads. 83% ship with Prime. On an average day, 7.0% of listings are out of stock. The average listing ranks #1,024 within Fancy Dress. It carries 1,097 reviews at 4.37 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 83%
- Prime listings
- 83%
- Out of stock, average day
- 7.0%
- Average rank
- #1,024in Fancy Dress
- Average rating
- 4.37 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 1,097per listing
- Listings tracked
- 47
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 29, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Aomig Kids Halloween Fancy Dress Costume with Ninja Accessories Warrior Muscle Costume for Boys Girls Luxury Role Play Outfit for Halloween Cosplay Theme Party (M)
- Price
- £11.51
- Rating
- 4.6/5
- Reviews
- 1,008
- Age
- 3y ago

Spooktacular Creations Halloween Golden Ninja fighter costume for kids Toddlers Boys (Medium (8-10 yrs))
- Price
- £24.43
- Rating
- 4.5/5
- Reviews
- 1,345
- Age
- 5y ago

Spooktacular Creations Boys Ninja Deluxe Costume for Kids Halloween Ninja Cosplay Costume for Boys and Girls
- Price
- £16.36
- Rating
- 4.6/5
- Reviews
- 10,073
- Age
- 8y ago

SATKULL Kids Ninja Costumes Halloween Ninja Costume Set for Boy Deluxe Ninjas Role Playing Suit(Kids-S-4/5T Black)
- Price
- £15.16
- Rating
- 4.5/5
- Reviews
- 380
- Age
- 5y ago

Banxidi Ninja Kidz Boys Tracksuit Hoodies Kids Sweatshirt Long Sleeve for 2-piece Sets Sportswear Clothing 2-13Years black-150CM
- Price
- £21.49
- Rating
- 4.2/5
- Reviews
- 70
- Age
- 2y ago
Trending
estimated 90-day click momentum
Banxidi Ninja Kidz Boys Tracksuit Hoodies Kids Sweatshirt Long Sleeve for 2-piece Sets Sportswear Clothing 2-13Years black-110CM
- Price
- £19.99
- Rating
- 4.2/5
- Reviews
- 70
- Age
- 2y ago

GRACEART Mens Black Ninja Costume Japanese Samurai Swordsman Uniform Suit Halloween Cosplay Outfit
- Price
- £33.34
- Rating
- 4.3/5
- Reviews
- 16
- Age
- 1y ago

Banxidi Ninja Kidz Boys Tracksuit Hoodies Black 130CM
- Price
- £22.18
- Rating
- 4.2/5
- Reviews
- 70
- Age
- 2y ago

BSBUY Ninja Costume Kids Halloween Ninja Fancy Dress Costume with Ninja Accessories Warrior Ninja Muscle Costume for Boys Girls Luxury Ninja Role Play outfit for Halloween Cosplay Theme Party(M)
- Price
- £11.67
- Rating
- 4.7/5
- Reviews
- 4
- Age
- 3mo ago

Karate Suit Uniform Gi Kit with Belt by Athletics Gear | Polyester Cotton Blend Light Weight for Kids Men & Women (Black 000/110 cm)
- Price
- £16.44
- Rating
- 4.4/5
- Reviews
- 279
- Age
- 6y ago
Newest
by launch date
BSBUY Ninja Costume Kids Halloween Ninja Fancy Dress Costume with Ninja Accessories Warrior Ninja Muscle Costume for Boys Girls Luxury Ninja Role Play outfit for Halloween Cosplay Theme Party(M)
- Price
- £11.67
- Rating
- 4.7/5
- Reviews
- 4
- Age
- 3mo ago

BSBUY Ninja Costume Kids Halloween Ninja Fancy Dress Costume with Ninja Accessories Warrior Ninja Muscle Costume for Boys Girls Luxury Ninja Role Play outfit for Halloween Cosplay Theme Party(L)
- Price
- £11.17
- Rating
- 4.4/5
- Reviews
- 22
- Age
- 8mo ago

GRACEART Mens Black Ninja Costume Japanese Samurai Swordsman Uniform Suit Halloween Cosplay Outfit
- Price
- £33.34
- Rating
- 4.3/5
- Reviews
- 16
- Age
- 1y ago

Banxidi Ninja Kidz Boys Tracksuit Hoodies Kids Sweatshirt Long Sleeve for 2-piece Sets Sportswear Clothing 2-13Years black-150CM
- Price
- £21.49
- Rating
- 4.2/5
- Reviews
- 70
- Age
- 2y ago

Banxidi Ninja Kidz Boys Tracksuit Hoodies Black 130CM
- Price
- £22.18
- Rating
- 4.2/5
- Reviews
- 70
- Age
- 2y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 36% of clicks, no more. An open shelf where new products get seen.
Brands
16 rising
Sellers
33
Est. top-5 brand share
70%
Top 20: 100%
Est. top-5 click share
36%
Top 20: 79%
Open market
25%
- Spooktacular Creations26%
- Banxidi15%
- SATKULL12%
- Aomig10%
- Morph8%
- BSBUY5%
Demand
Ninja Costume search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Mar, Oct, Nov · busiest ÷ quietest = 17.9×
Search terms
Top Ninja Costume search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- ninja costume kids66K/yr
- ninja costume39K/yr
- kids ninja costume22K/yr
- ninja outfit7K/yr
- ninja outfit kids6K/yr
- ninja kids costume7K/yr
- boys ninja costume7K/yr
- ninja halloween costumes for boys4K/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.
“The size was too small as well”
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.
13 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









