What payment gateways work well on appengine?

Question

Well, I've been building some free apps on top of appengine, but now I want to start charging money. My question is:

What is the best way to collect payments from users. Do certain services (paypal, google checkout, etc) work better/worse with AppEngine's library restrictions? Are there any good examples or tutorials to help me learn how to do this?

Answer 1

You can do this any way you want, really - and there's nothing App Engine specific about it. For example, you could use Google Checkout or Paypal, and charge users on any basis you want.

Answer 2

Also just something to point out about the implementation, a simple boolean property on your user object should allow you to easily turn functions in your app on and off, depending on which tier your user has paid for.