Amazon Search 2.4 (by WishCentral.com)
Sends your Amazon search straight to your web browser with localization preferences for Amazon’s regional web sites.

eBay Widget 3.5.1 (by FreeStuffCrazy)
An English eBay search bar with a pull out tray of the last 12 things other users have searched for with the widget.

Computer Finder 1.0 (by BuyAComputerOnline.com)
Search for computers, software, peripherals, MP3 players and more right from your desktop.

eBay Watcher 4.0 (by Hawk Innovations)
This is a Dashboard widget that monitors an item on eBay.

Amazon top10 1.1 (by Bookspree.com)
With the Amazon top 10 dashboard widget you can keep track of the top selling books in your favorite category.