The Zazzle Store for .Net is a simple asp.net application that retrieves a collection of Zazzle products and lists them on your own webpage. The current release is very similar to the sample "ZStore" app that Zazzle has on their own site (which uses PHP instead of .Net).
We have lots of plans for this store, but the current version is quite simple and more just a starting point for something better. We plan to move the store to MVC3 with Razor very soon.
To download the code, visit the Zazzle Store for .Net on Codeplex.