If there's a category on eBay of interest to your target niche, it may be well worth the effort of opening an affiliate account. You can display relevant ads for popular auctions on your site. The ads contain product information, gallery images, bidding prices, and ending times. eBay claims that the click-through rates for these ads are double that of regular banner ads. After joining, you can operate your eBay affiliate account using a network like Commission Junction, mentioned above.
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