Recently started to work on WordPress Affiliate Shop Plugin. It si inspired by www.datafeedr.com . However I will keep the concept much simpler - ready to go plugin that may be filled in with products, it will allow producst browsing and redirect to affiliate shop. all is seo friendly and fast.
Plugin is almost ready, all i need is to add some options page for the customization and product remote browser. currently I have Commission Junction module - type your search and get your database filled in with a products.
Needless to day that plugin will be commercial, however price will be much lower that those indicated on datafeedr
Below is some screenshots: