51
waterproof twin mattress
Worth a lookShows low returns (1.5%), but a deep review moat (10,284 avg reviews) keeps it on the watch list.
Returns
Great1.5%return rate — above 5% kills the launch gate
Brand share
Great58%top-5 brand share — no brand owns this niche
Avg price
Good$126.75avg listing price — sweet spot $15–$100
Competition
Good47%top-5 click share — leaders hold, buyers still browse
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Market size
Okay$270K$270K/yr · 83K searches
Conversion
Okay2.6%search→purchase rate — share of searches ending in a sale
Growth
Okay+0.9%90-day search growth — must beat 0% to launch
Price range
Okay$9.50–$349.50cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Bad10,284.25avg incumbent reviews — the moat a new listing must climb