Post type Product page is old fashioned, you can easily create grid view inside your product page of your WP e-Commerce site, similar to Amazon and eBay.
WP e-Commerce Grid View showcases your products using a grid view layout that provides your customer enhanced browsing and shopping experience. So if your are running your WP e-Commerce site using WP e-Commerce plugin then install and activate WP e-Commerce Grid View plugin additionally. After you activate it move to your Dashboard > Settings > Store >Presentation(tab)
Scroll down and change Default View to Grid View (from dropdown menu) and its all done. Visit your product page and see the changes: