How I Run 3 SaaS Products on $0/Month Hosting (Cloudflare Workers Architecture)

Everyone tells you SaaS needs servers. Monthly bills. DevOps. Infrastructure. I run 3 commercial products — and my hosting bill is $0/month . Here's exactly how. The Stack Frontend : Static HTML/CSS/JS on Cloudflare Pages (free) Backend : Cloudflare Workers (100K requests/day free) Database : Workers KV + D1 (free tier covers everything) Payments : CardPointe (no monthly fee, just per-transaction) Email : MailChannels via Workers (free) CDN/SSL : Cloudflare (obviously free) The Products Scan0tron ($49) — AI screen capture + auto-fill. Desktop app (Electron) talks to a Worker API for license validation. JRD Garage ($99) — Auto shop management. Full work orders, CRM, parts tracking. All serverless. SiteSweep ($79) — Location intelligence. 10-factor scoring algorithm rates business sites C through AAA. All one-time purchase. No subscriptions. Why This Works Cloudflare Workers run at the edge in 300+ cities. Cold start is ~0ms (not Lambda's 500ms+). The free tier gives you: 100,000 request