Hi,
just writing to share with you new handy app
https://github.com/cypreess/django-getpaid which is universal app for payment processing. It can support multiple payment backends via plugable backends.Documentation can be found at
http://django-getpaid.readthedocs.org/en/latest/ (proof reading is welcome). It uses almost no assumption about your code - just requires ANY model representing an order to dynamically bind with (and does not uses flaky contenttypes for that!).
Available also on PyPI as django-getpaid.
Currently supported backends: PayU (old Platnosci.pl) and Transferuj.pl.
It would be nice to have next: PayPal, dotpay, google checkout? (maybe somebody wan't to write any of them? :-)
Current v1.1.1 should be production stable, as I was testing it for a while.
Cheers
DK