[bmelton]

Seconding Stripe.

If the time of setting up payments takes away from other things, Stripe is the ideal payment processor IMO, as they are the most respectful of integration time of any payment processor I've seen. You can literally be up, running and billing actual customers with Stripe within an hour or so.

If your goal is to maximize revenue, or your entire product is built except for billing, then perhaps Stripe isn't the ideal processor, but it's still pretty darn good by most standards.