To replace eBay links which are now dead, use the eBay Link Generator tool.
Go to eBay and do a search on a product. Find keywords that describe the product well. Once you're happy with the search results, copy the URL. Hint, make sure the URL has a + sign separating each key word.
Go to your eBay Partner Network.
Click the Tools tab.
Click Link Generator.
Paste the URL from your search and generate an eBay search link.