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waterproof sealant mastic
Skip itSoft demand (-48.4% this quarter) — this niche doesn't clear our bar today.
Returns
Incredible0.7%return rate — above 5% kills the launch gate
Review moat
Great296.86avg incumbent reviews — the moat a new listing must climb
Conversion
Great9.2%search→purchase rate — share of searches ending in a sale
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Brand share
Okay79%top-5 brand share — brands hold most of the demand
Avg price
Okay$10.15avg listing price — sweet spot $15–$100
Market size
Okay$140K$140K/yr · 150K searches
Competition
Bad71%top-5 click share — a locked-up shelf
Price range
Bad$5.00–$17.55cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Bad-48.4%90-day search growth — must beat 0% to launch
Signals Low Review Barrier