Ashley
Using directurl it appears to be very simple to add in app purchasing with the browser plugin and the sample callback.php on developer.facebook.com. Only thing that seems to need javascript is the call to fetch currency info. Is it possible to go check out the docs and maybe add the couple of needed calls for the local currency rates? Or maybe someone else can take a crack at it? The sdk keeps overwhelming me every time I try and create a plugin.
I uploaded the callback and have a button that changes the URL to the above using the browser plugin. Then when the game starts it checks the URL for the necessary parameters and updates the database accordingly with the queryparam browser feature. It appears simple, just missing the above. :(