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diamond sharpening stone
Worth a lookShows a sweet-spot price point ($34.97 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Avg price
Incredible$34.97avg listing price — sweet spot $15–$100
Returns
Great1.1%return rate — above 5% kills the launch gate
Competition
Great40%top-5 click share — an open shelf
Market size
Good$796K$796K/yr · 694K searches
Price range
Good$7.92–$164.45cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Okay76%top-5 brand share — brands hold most of the demand
Conversion
Okay3.3%search→purchase rate — share of searches ending in a sale
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Bad4,185.02avg incumbent reviews — the moat a new listing must climb
Growth
Bad-1.8%90-day search growth — must beat 0% to launch