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wemos d1 mini
Skip itA small market ($17K/yr) — this niche doesn't clear our bar today.
Review moat
Great143.91avg incumbent reviews — the moat a new listing must climb
Returns
Great1.5%return rate — above 5% kills the launch gate
Avg price
Good$14.75avg listing price — sweet spot $15–$100
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Price range
Good$5.70–$26.36cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good4.2%search→purchase rate — share of searches ending in a sale
Growth
Bad-20.9%90-day search growth — must beat 0% to launch
Competition
Bad82%top-5 click share — a locked-up shelf
Brand share
Bad96%top-5 brand share — brand-locked demand
Market size
Bad$17K$17K/yr · 28K searches
Signals Low Review Barrier