35
13th birthday shirt
Skip itA small market ($21K/yr) — this niche doesn't clear our bar today.
Returns
Great1.7%return rate — above 5% kills the launch gate
Avg price
Great$15.22avg listing price — sweet spot $15–$100
Review moat
Good787.55avg incumbent reviews — the moat a new listing must climb
Brand share
Good68%top-5 brand share — brands hold most of the demand
Price range
Good$5.91–$28.20cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Okay68%top-5 click share — leaders hold, buyers still browse
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Conversion
Bad1.4%search→purchase rate — share of searches ending in a sale
Growth
Bad-18.3%90-day search growth — must beat 0% to launch
Market size
Bad$21K$21K/yr · 104K searches
Signals Low Review Barrier