I've run into this same issue - trying to hack on a side project to accept payments and I don't have $100's / month to pay fees on a real payment processor like

I've run into this same issue - trying to hack on a side project to accept payments and I don't have $100's / month to pay fees on a real payment processor like braintree or authorize.net - nor do I want to bother with a merchant account for a project I'm spending an hour or two a week on. You can go with Paypal or Google Checkout but both seem less-than-professional in my opinion. You're kind of stuck between a rock and a hard place. What I'd love to see is something like Square - but for online payments. I can link square to my normal bank account, there's no monthly fee, no merchant account to deal with, etc - just a per transaction fee. Online payments are a nightmare for a small bootstrapped side project, and in least in my research there's no good solution.