title: How to use Google Checkout with Google AppEngine Java
body: <p>I have an AppEngine app. I'd like to add a payment system to it, and Google Checkout would seem the natural choice.</p>
  
  <p>This should be simple, right? Google should want us to use their checkout, and provide handy jars and sample code. But after half an hour of web searching, the closest thing I found was how to use PayPal with appengine.</p>
  
  <p>Can anyone point me to a tutorial or other documentation?</p>
  
  <p>Or is PayPal the better option?</p>