>We already pay eBay a listing fee to advertise our products on eBay. I do not really understand the logic of why you have text ads on top of that. I can only reason that if keyword “spamming” is an issue, you can get around by supplementing your advertising via text ads.

eBay Launches Pay-Per-Click Advertising Program for Sellers: “The pay-per-click ad program, similar to Google AdWords or Yahoo Search Marketing, allows eBay sellers to advertise their listings and eBay Stores on eBay search results pages via a customized text ad.”