57
queen box spring 9 inch
Worth a lookShows no brand lock-in (top 5 brands take 54% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Brand share
Great54%top-5 brand share — no brand owns this niche
Avg price
Great$88.84avg listing price — sweet spot $15–$100
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Price range
Good$57.31–$123.86cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good5.5%search→purchase rate — share of searches ending in a sale
Market size
Good$478K$478K/yr · 98K searches
Competition
Good52%top-5 click share — leaders hold, buyers still browse
Returns
Okay3.1%return rate — above 5% kills the launch gate
Review moat
Okay2,264.14avg incumbent reviews — the moat a new listing must climb
Growth
Bad-0.9%90-day search growth — must beat 0% to launch