Most crosslisting tools cost $30-100/month and treat estate sale companies and antique dealers as edge cases. APMTSales is free, and built for them. List once, sync to eBay, Etsy, Facebook Marketplace, Whatnot, and Nextdoor. Every seller gets a hosted storefront subdomain — a real shop URL alongside their marketplace listings. Bulk inventory tools tuned for "load everything from one estate" workflows. All 5 integrations free, no credit card, no time limit.