I build SaaS MVPs for founders. I don't usually do cheap work but this guy seemed like he genuinely needed the help, so I quoted him way under my normal rate for a MVP build. First mistake, but we'll get there. Scoped it at two weeks. He pays an advance through PayPal, I get to work. Every few days he shows up with changes. Can we add this. What if it also did that. At first I just built them. Eventually I said look, extras cost extra, and he goes yeah yeah build it, we'll handle it at the e...