ninja knife set
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size
Great£899K£899K/yr · 938K searches
Returns
Great2.0%return rate — above 5% kills the launch gate
Avg price
Good£119.72avg listing price — sweet spot $15–$100
Review moat
Okay2,450avg incumbent reviews — the moat a new listing must climb
Price range
Okay£33.78–£201.51cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Growth
Bad-29.6%90-day search growth — must beat 0% to launch
Conversion
Bad0.8%search→purchase rate — share of searches ending in a sale
Competition
Bad94%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, ninja knife set is a £899K/yr Amazon United Kingdom market (938K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 31/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
ninja knife set market data
- Units sold / yr
- 13K–15K
- avg 2,500–3,000/product
- Revenue / yr
- £1.5M–£1.8M
- units × avg price
- Conversion rate
- 0.8%
- Avg BSR
- #13
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 0.0%
- Avg brand age
- 48 months
- Avg seller age
- 173 days
Competition & brand share
The top 5 products capture 94% of clicks — a locked-up shelf that new listings rarely crack.Brands
2 flat
Sellers
18
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
94%
Top 20: 100%
Open market
0%
- Ninja97%
- ACOQOOS3%
Demand
Weekly Amazon search volume, last 47 weeks — -29.6% search growth over the last 90 days.Top ninja knife set search terms
- ninja knife set502K/yr
- ninja knives93K/yr
- ninja knife block set with sharpener121K/yr
- ninja knife39K/yr
- ninja knives set with sharpener14K/yr
- ninja stay sharp knife set21K/yr
- ninja knife block24K/yr
- ninja never dull knife set12K/yr
- ninja knifes12K/yr
- ninja knives set31K/yr
Top ninja knife set 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 7 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Ninja Foodi StaySharp Knife Block with Integrated Sharpener 5 Knives and Scissors (1 pair) Sharp 6-Piece Knife Set Chef Bread Slicing Utility Paring Knives & Scissors Stainless Steel K32006UK
Ninja£102.694.8★5,522 rev
Ninja Foodi StaySharp Knife Block with Integrated Sharpener 5-Piece Set Includes Kitchen and Herb Scissors Black/Stainless Steel K32005UK
Ninja£90.924.8★5,522 rev
Ninja Foodi StaySharp Knife Block with Integrated Sharpener Deluxe 14-Piece Set K32014EUUK - Black
Ninja£161.774.8★302 rev
Ninja StaySharp 13-Piece Knife Block Set with Removable Knife Sharpener Rust-Resistant German Stainless Steel Includes Kitchen and Herb Scissors Stone Gold NK32013EUUKSD1
Ninja£201.514.8★16 rev
Ninja StaySharp Knife Set Stainless Steel 6Piece Set with Integrated Sharpener Chef Kitchen Slicing Bread Utility and Paring knives Kitchen Scissors White K62006EUWH
Ninja£116.704.7★712 rev
Newest
by launch dateNinja StaySharp 13-Piece Knife Block Set with Removable Knife Sharpener Rust-Resistant German Stainless Steel Includes Kitchen and Herb Scissors Stone Gold NK32013EUUKSD1
Ninja£201.5116 rev
Ninja Foodi StaySharp Knife Block with Integrated Sharpener Deluxe 14-Piece Set K32014EUUK - Black
Ninja£161.77302 rev
Ninja StaySharp Knife Set Stainless Steel 6Piece Set with Integrated Sharpener Chef Kitchen Slicing Bread Utility and Paring knives Kitchen Scissors White K62006EUWH
Ninja£116.70712 rev
Ninja StaySharp Knife Set Stainless Steel 6-Piece Knife Set with Integrated Sharpener Includes Kitchen and Herb Scissors Black K62006EUUK
Ninja£130.70712 rev
Knife Set with Block 14 Piece with Built-in Sharpener Kitchen Knives for Chopping Slicing Dicing Cutting by ACOQOOS
ACOQOOS£33.784,364 rev
Trending
90-day click momentumNinja StaySharp 13-Piece Knife Block Set with Removable Knife Sharpener Rust-Resistant German Stainless Steel Includes Kitchen and Herb Scissors Stone Gold NK32013EUUKSD1
Ninja£201.514.8★
Ninja StaySharp Knife Set Stainless Steel 6Piece Set with Integrated Sharpener Chef Kitchen Slicing Bread Utility and Paring knives Kitchen Scissors White K62006EUWH
Ninja£116.704.7★
Ninja Foodi StaySharp Knife Block with Integrated Sharpener Deluxe 14-Piece Set K32014EUUK - Black
Ninja£161.774.8★
Ninja Foodi StaySharp Knife Block with Integrated Sharpener 5 Knives and Scissors (1 pair) Sharp 6-Piece Knife Set Chef Bread Slicing Utility Paring Knives & Scissors Stainless Steel K32006UK
Ninja£102.694.8★
Ninja Foodi StaySharp Knife Block with Integrated Sharpener 5-Piece Set Includes Kitchen and Herb Scissors Black/Stainless Steel K32005UK
Ninja£90.924.8★
What buyers say about ninja knife set
What buyers praise and complain about, mined from review topics.What buyers love
“look well made”
“Excellent value for money”
“Very sharp”
“Comfortable to hold and use”
“Comfortable grip”
“actually stay that way during regular use”
“The various sizes are so easy to use for all areas of chopping”
“stylish design”
“The knife block is a lovely matt midnight blue colour”
“They feel sturdy, well made, and have been a definite upgrade in my kitchen”
What buyers complain about
“The build quality is very poor”
“Came off in food after couple months”
“bit the bullet as they are expensive”
“Not fit for purpose”
“Took some time to read instructions on sharpening”
“Blunt not very sharp”
“the scissors have rusted”
“after a while the black started to come off in my food”
“feel heavy”
“I will have to return it because I dont have enough space for it in my kitchen”
Top return reasons
Common questions
- Is ninja knife set profitable to sell on Amazon United Kingdom?
- The niche generates £899K/yr across 7 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -29.6%. Flapen's verdict: Skip it (31/100).
- How competitive is the ninja knife set niche?
- 2 brands and 18 sellers compete. The top 5 products take 94% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in ninja knife set?
- Top complaints mined from reviews: Quality-Overall, Durability, Value For Money. The return rate is 2.0%.
- What does it cost to enter the ninja knife set niche?
- Listings span £33.78–£201.51; the average listing price is £119.72 (sweet spot $15–$100). The average incumbent carries 2,450 reviews — the moat a new listing must climb.