GraphicsFuel's new PSD freebie is a pretty clean and professional shopping cart modal popup interface in Photoshop format. The cart GUI lists added products with small thumbnail images. It also includes a small delete icon to delete products from the list. Hope this nice interface can be handy in your ecommerce projects.

As always, the interface design comes with shape layers to help you edit and resize it.  I have included two PSD files slightly tweaking the interface to fit on light and dark backgrounds.