57
clear book cover
Worth a lookShows a fragmented shelf (top 5 take 29% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Competition
Great29%top-5 click share — an open shelf
Price range
Great$4.48–$60.95cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Great1.8%return rate — above 5% kills the launch gate
Brand share
Great57%top-5 brand share — no brand owns this niche
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Avg price
Great$15.22avg listing price — sweet spot $15–$100
Review moat
Good690.3avg incumbent reviews — the moat a new listing must climb
Growth
Okay+5.9%90-day search growth — must beat 0% to launch
Conversion
Okay2.0%search→purchase rate — share of searches ending in a sale
Market size
Bad$54K$54K/yr · 176K searches
Signals No Dominant Brand