dolphin knife
Skip itA small market ($59K/yr) — this niche doesn't clear our bar today.
Returns
Incredible0.8%return rate — above 5% kills the launch gate
Review moat
Great273.62avg incumbent reviews — the moat a new listing must climb
Competition
Good41%top-5 click share — leaders hold, buyers still browse
Conversion
Good5.3%search→purchase rate — share of searches ending in a sale
Avg price
Good£12.25avg listing price — sweet spot $15–$100
Price range
Good£4.36–£25.61cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Bad-15.8%90-day search growth — must beat 0% to launch
Brand share
Bad94%top-5 brand share — brand-locked demand
Market size
Bad£59K£59K/yr · 91K searches
According to Flapen's Amazon United Kingdom niche tracking, dolphin knife is a £59K/yr Amazon United Kingdom market (91K searches/yr). The top 5 brands hold 94% of demand. Demand peaks in Sep. Verdict: Skip it — 46/100.
Data updated Jul 22, 2026 · scored weekly · How we score niches
dolphin knife market data
- Units sold / yr
- 4K–5K
- avg 100–250/product
- Revenue / yr
- £49K–£61K
- units × avg price
- Conversion rate
- 5.3%
- Avg BSR
- #30
- Page quality
- 0%
- Prime
- 97%
- Sponsored
- 55%
- Out of stock
- 15.6%
- Avg brand age
- 59 months
- Avg seller age
- 184 days
Competition & brand share
The top 5 products take 41% of clicks — established leaders, but buyers still shop beyond them.Brands
11 falling
Sellers
13
Top-5 brand share
94%
Top 20: 100%
Top-5 click share
41%
Top 20: 90%
Open market
4%
- CCA65%
- Barnwell10%
- Dolphin7%
- TradeUnderlay6%
- PTL6%
- DEKTON2%
- Open — no brand owns it (5 brands, 4%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -15.8% search growth over the last 90 days.Peak months: Sep · busiest ÷ quietest = 2.0×
Top dolphin knife search terms
- dolphin knife50K/yr
- delphine knife19K/yr
- delphin knife10K/yr
- carpet knives6K/yr
- artificial grass cutting knife3K/yr
- flooring knife5K/yr
Top dolphin knife 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
TradeUnderlay Orange Carpet Fitter Knife with Orange Holster
CCA£10.874.4★204 rev
TradeUnderlay Silver Knife Carpet Fitter Economy Tool with Holster
CCA£10.854.7★22 rev
Delphin Yellow dolphin Knife Carpet Fitter Professional Tool
Dolphin£15.554.6★604 rev
CCA Black Carpet Cutter Tool with Black Holder for Pro and DIY Installers
CCA£10.884.7★51 rev
Dolphin Dolphin Knife Carpet Cutter Professional Tool with Holster White
TradeUnderlay£15.514.8★429 rev
Newest
by launch date
Dekton Carpet Knife Heavy Duty Razor Blade Utility Knife for Cutting Carpets Vinyl and Flooring Materials | Ergonomic Soft-Grip Handle | Quick Blade Change | Ideal for DIY and Professional Use
DEKTON£6.1665 rev
Barnwell Silver Carpet Stingray Fixed Handle Work Tool ONLY with Belt/Pocket Holster
Barnwell£10.2515 rev
Barnwell Pink Carpet Stingray Fixed Handle Work Tool ONLY with Belt/Pocket Holster
Barnwell£9.4315 rev
Barnwell Green Carpet Stingray Fixed Handle Work Tool ONLY with Belt/Pocket Holster
Barnwell£10.1312 rev
Dolphin Carpet Cutting Handle Carpet Fitter Work Trimming Knife with Holster Candy Violet - No Blades PTL
PTL£22.083 rev
Trending
90-day click momentum
Shark-Tuff Heavy Duty Folding Utility Knife with 10 Spare SK5 Blades | All Metal Sharp Craft Tradesman Camping Pocket Knife Cardboard Box Cutter with Belt Clip & Safety Lock UK Legal
Homebay£4.984.5★
TradeUnderlay Black Carpet Fitter Knife with Holster
CCA£10.914.5★
CCA White Carpet Cutter Tool with White Holder for Pro and DIY Installers
CCA£9.244.4★
Dolphin Carpet Cutting Handle Carpet Fitter Work Trimming Knife with Holster Candy Violet - No Blades PTL
PTL£22.084.6★
TradeUnderlay Orange Carpet Fitter Knife with Orange Holster
CCA£10.874.4★
What buyers say about dolphin knife
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent product”
“Reasonable price”
“Easy to use”
“Does the job”
“easy to grip comes with extra blades”
“a solid bit of kit which i think will last for a long time”
“the design is comfortable”
“Great price very durable”
“They are comfortable to use and feel sturdy”
“Nice little knife very compact”
What buyers complain about
“One broke on the first day”
“Inferior quality, fell apart after a couple of weeks”
“knife is a sloppy fit”
“Quite difficult to open and close”
“Not so heavy duty”
“the contents spilled in to the tool box”
“Poor design”
“Very hard to get blade out”
“Waste of money”
“stiff for me to use due to issues with my hand”
Top return reasons
Common questions
- Is dolphin knife profitable to sell on Amazon United Kingdom?
- The niche generates £59K/yr across 29 tracked products. 90-day search growth is -15.8%. Flapen's verdict: Skip it (46/100).
- How competitive is the dolphin knife niche?
- 11 brands and 13 sellers compete. The top 5 products take 41% of clicks and top 5 brands hold 94% of demand.
- What do buyers complain about in dolphin knife?
- Top complaints mined from reviews: Durability, Quality-Overall, Size-Overall. The return rate is 0.8%.
- When does demand for dolphin knife peak?
- Demand peaks in Sep; the busiest month runs 2.0× the quietest.
- What does it cost to enter the dolphin knife niche?
- Listings span £4.36–£25.61; the average listing price is £12.25 (sweet spot $15–$100). The average incumbent carries 274 reviews — the moat a new listing must climb.