I am looking at creating a site using ASP.Net MVC which of coarse has a paid membership option and needs to allow recuring payments via Paypal. I am thinking of using Paypals Payflow Link as the site will be fairly small. I am looking for an Open Source example or Framework that I can use with Payflow Link. Are there any good .Net Frameworks that only handle the payment system. The rest of the app will be custom app.