50
diesel fuel cap
Worth a lookShows a sweet-spot price point ($18.25 avg), but a small market ($53K/yr) keeps it on the watch list.
Avg price
Great$18.25avg listing price — sweet spot $15–$100
Review moat
Great369.48avg incumbent reviews — the moat a new listing must climb
Price range
Good$7.48–$121.86cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good62%top-5 brand share — brands hold most of the demand
Returns
Good2.4%return rate — above 5% kills the launch gate
Conversion
Good5.5%search→purchase rate — share of searches ending in a sale
Competition
Good52%top-5 click share — leaders hold, buyers still browse
Quality gap
Good4.5★avg incumbent rating — lower means beatable quality
Growth
Bad-7.8%90-day search growth — must beat 0% to launch
Market size
Bad$53K$53K/yr · 53K searches
Signals Low Review Barrier