I'm working on a Python app that I want to have downloadable content. Some of the downloadable content will be free. Some will cost money. I'll need a database of my users and products and who has paid for what. I'd like to use some service that rolls this altogether. I'd like it if the cost was nothing to me, but they just took a percentage of the money I charge for the paid downloads (they'd serve the free downloads for free.) I'd like to keep the store in my own app, meaning it needs to either have a Python wrapper or a REST or SOAP API or something - I don't want to have to send my users to their website or something. Does anyone know of a service like this? I know I could write the whole server process myself and just rent VMs from Amazon or SoftLayer or something, but I'm hoping for something prebuilt/faster/easier, so I can get on to the parts of my app that are unique/new and not reinvent yet another online store thing.