Forward is currently in Alpha. It's an open-source, MongoDB e-commerce platform designed for developers and designers. Screengrabs look promising, and the little bit of code shown looks quite sane. One to watch.
Layered PSD files. Includes all solid colours that American Apparel currently offers in their Fine Jersey Short Sleeve T-Shirt with realistic highlights and shadows, and removable tags. Each package includes 5 separate files. $20 to buy.