Japanese
FailThe top 5 brands take 100% of clicks, so Japanese is a Fail.
- Flapen Score
- 36 / 100Ranks 2,659 of 2,976 Grocery niches · −10 vs the category median of 4636
- Market size
- £408K/yr852K searches / yr
- 90-day growth
- -15.7%search demand this quarter
- Competition
- 86%top-5 click share · 4 brands · 32 sellers
Flapen Score
Japanese against its category
The dotted line is the Grocery average. Past it, Japanese is stronger. Inside it, weaker.
Market
The Japanese market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for Japanese 852K times last year and spent an estimated £408K. All 4 brands take every click. Demand peaks in Nov–Dec. Flapen scores it 36 out of 100, a Fail.
01 · Demand
An estimated 5.1% of those searches ended in a purchase.
Shoppers searched for this 852K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 5.1% of those searches ended in a purchase. Searches in the last 90 days moved -15.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated £408K a year.
- Searches, last 12 months
- 852K
- Growth, 90 days vs prior 90
- -15.7%
- Conversion, latest week
- 5.1%
- Market size, estimated
- £408Ka year
- Peak month
- December5.0× the quietest month
- Top search term
- japanese289K searches a year
02 · Price
A sale here is worth £9.42.
Listings sell for £9.42 on average, from £3.63 to £16.20. Amazon reports units sold in ranges. This niche sold 40K to 50K a year. The average listing sells 1,500 to 2,000 of them. At £9.42 that is £14K to £19K a year per listing.
- Average price
- £9.42under the $15 to $100 sweet spot
- Price range
- £3.63–£16.20
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 40K–50K
- Units per listing a year
- 1,500–2,000
- Revenue per listing a year
- £14K–£19K
- Returns
- 0.0%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is reviews.
44% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 2.1% of listings are out of stock. The average listing ranks #247 within Condiments & Sauces. It carries 1,933 reviews at 4.53 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 44%
- Prime listings
- 100%
- Out of stock, average day
- 2.1%
- Average rank
- #247in Condiments & Sauces
- Average rating
- 4.53 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 1,933per listing
- Listings tracked
- 9
04 · Newcomers
Brands here are settling in.
The brands on the shelf have sold for 46 months on average, so the names here are settling in.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 46 months
Products
Top Japanese 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 24, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Kewpie Mayonnaise 355ml | Authentic Japanese Mayo | Rich Umami Flavour | No MSG & Gluten-Free
- Price
- £4.48
- Rating
- 4.6/5
- Reviews
- 859
- Age
- 3y ago

Kewpie Mayonnaise 450g | Rich Umami-Packed Japanese Mayo
- Price
- £5.44
- Rating
- 4.7/5
- Reviews
- 6,095
- Age
- 12y ago

Kewpie Mayonnaise 450g (Pack of 2) | Rich Umami-Packed Japanese Mayo
- Price
- £11.59
- Rating
- 4.7/5
- Reviews
- 6,095
- Age
- 16y ago

Kewpie Mayonnaise 350ml
- Price
- £6.18
- Rating
- 4.5/5
- Reviews
- 1,628
- Age
- 8y ago

Kenko Japanese Mayonnaise 500g
- Price
- £3.63
- Rating
- 4.6/5
- Reviews
- 205
- Age
- 10y ago
Trending
estimated 90-day click momentum
Sock Affairs Japanese Art Socks Collection Great Wave of Kanagawa Ramen Sushi Carps Swimming Cancel My Subscription Gifts for Art Lovers Cotton Socks 2 Sizes 4-7 and 7-11
- Price
- £9.09
- Rating
- 4.7/5
- Reviews
- 81
- Age
- 2y ago

Kewpie Mayonnaise 355ml | Authentic Japanese Mayo | Rich Umami Flavour | No MSG & Gluten-Free
- Price
- £4.48
- Rating
- 4.6/5
- Reviews
- 859
- Age
- 3y ago

Kewpie Mayonnaise 450g (Pack of 2) | Rich Umami-Packed Japanese Mayo
- Price
- £11.59
- Rating
- 4.7/5
- Reviews
- 6,095
- Age
- 16y ago

Kenko Japanese Mayonnaise 500g
- Price
- £3.63
- Rating
- 4.6/5
- Reviews
- 205
- Age
- 10y ago

Kewpie Mayonnaise 2400ml
- Price
- £15.46
- Rating
- 4.1/5
- Reviews
- 43
- Age
- 1y ago
Newest
by launch date
Kewpie Mayonnaise 2400ml
- Price
- £15.46
- Rating
- 4.1/5
- Reviews
- 43
- Age
- 1y ago

Sock Affairs Japanese Art Socks Collection Great Wave of Kanagawa Ramen Sushi Carps Swimming Cancel My Subscription Gifts for Art Lovers Cotton Socks 2 Sizes 4-7 and 7-11
- Price
- £9.09
- Rating
- 4.7/5
- Reviews
- 81
- Age
- 2y ago

Kewpie Mayonnaise 355ml | Authentic Japanese Mayo | Rich Umami Flavour | No MSG & Gluten-Free
- Price
- £4.48
- Rating
- 4.6/5
- Reviews
- 859
- Age
- 3y ago

Kewpie Mayonnaise 15.87oz/450g (3 Pack)
- Price
- £16.20
- Rating
- 4.8/5
- Reviews
- 62
- Age
- 7y ago

Kewpie Mayonnaise 350ml
- Price
- £6.18
- Rating
- 4.5/5
- Reviews
- 1,628
- Age
- 8y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 86% of clicks. A locked shelf that new listings rarely crack.
Brands
4 rising
Sellers
32
Est. top-5 brand share
100%
Top 20: 100%
Est. top-5 click share
86%
Top 20: 100%
Open market
0%
- Kewpie87%
- London Grocery6%
- Sock Affairs5%
- SUSHICANDY The Sweet taste of Japan2%
- Open — no brand owns it (0%)
Demand
Japanese search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Nov, Dec · busiest ÷ quietest = 5.0×
Search terms
Top Japanese search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- japanese289K/yr
- kewpie mayo130K/yr
- japanese gifts254K/yr
- japanese food70K/yr
- kewpie27K/yr
- kewpie mayonnaise15K/yr
- japanese mayonnaise16K/yr
- japanese gifts for men31K/yr
- japanese mayo8K/yr
- japan gifts11K/yr
Reviews and returns
What reviews say buyers love and hate about Japanese
We read the reviews and the return reasons for every product selling here.
“Just wish it was a bit cheaper”
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.
15 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 Japanese 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









