Problem: Bootstrapped solo e-commerce founders who sell physical products outside mainstream categories struggle to find niches with real demand but low ad competition. Existing tools like Dropkiller lean toward generic dropshipping trends where every founder chases the same saturated products, driving up ad costs and killing margins. Named product: Dropkiller for Indie Hackers is a curated product-market signal engine plus ad creative templates, deliberately narrowed to low-competition niches. Solution: rather than a firehose of trending SKUs, the tool surfaces validated demand signals inside overlooked categories and pairs each with proven ad creative structures so a solo founder can go from niche idea to first campaign fast. MVP: a searchable database of low-competition physical product niches, each with a demand signal score, competition indicator, and 2 to 3 ad creative templates ready to adapt. Revenue: monthly SaaS subscription aimed at solo founders, likely a single low tier to match a bootstrapped budget. GTM: launch where the target lives, indie hacker and build-in-public communities and founder forums, positioning against Dropkiller as the anti-saturation alternative. Growth loops: founders who win with a niche share their creative and results, which feeds back new validated niches and creative examples into the database, and public wins act as social proof to pull in the next cohort.