The good times just keep on rolling over here on the Web Platform team here at Microsoft. We have just released a new application out onto the Windows Web Application Gallery, nopCommerce.
nopCommerce is the leading ASP.NET online shop e-commerce solution. nopCommerce can be installed and set-up by anyone with the most basic web site building and computer skills. nopCommerce is a secure, scalable and extendable e-commerce platform. It has user friendly administration tool to manage your storefront and customers, wish lists, discounts, coupons, flexible tax support, multi-lingual support, and hundreds of other features. Support for most popular gateways: Authorize.net, PayPal, Google Checkout, 2Checkout, and more. nopCommerce also runs in Medium Trust.
Check it out.