Google's image search engine now shows rich snippets for shopping sites like Amazon and eBay, but only when you use the mobile interface. Google displays the name of the product, the price, the rating and the number of reviews, stock information and a short description. There's also a message that asks users to "check website for latest pricing and availability".
Google Image Search is pretty useful for finding products and the new snippets include even more information. I'd like to see a filtering option for products in web search and image search, now that Google Product Search only shows paid listings (also known as ads) and "payment is one of several factors used to rank these results".