I agree with the suck it up and move on. Your time lost isn't substantial. At least you learned about his character early on. If you would still consider doing

I agree with the suck it up and move on. Your time lost isn't substantial. At least you learned about his character early on. If you would still consider doing business with him on this project. A. Get paid up front for further work or at least make sure he pays for what you already did before you doing anything else. B. Quote him higher than you otherwise would quote.