50
diamond knife sharpener
Worth a lookShows low returns (0.6%), but a small market ($55K/yr) keeps it on the watch list.
Returns
Incredible0.6%return rate — above 5% kills the launch gate
Conversion
Incredible12.7%search→purchase rate — share of searches ending in a sale
Avg price
Great£20.98avg listing price — sweet spot $15–$100
Price range
Great£10.66–£53.44cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good614.07avg incumbent reviews — the moat a new listing must climb
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Brand share
Okay80%top-5 brand share — brands hold most of the demand
Competition
Bad71%top-5 click share — a locked-up shelf
Growth
Bad-19.6%90-day search growth — must beat 0% to launch
Market size
Bad£55K£55K/yr · 21K searches