Shopping Comparison Engines Supporting Product Level Bidding
Here is another quick review. A billing option which is growing is popularity is product level bidding. This occurs when instead of having a set bid cost per category, a comparison engine allows bidding on that particular product. The bid amount then heavily influences an item’s ranking in search results on each comparison engine. Think of this like keyword bidding except translated to individual items instead of text ads.
Engines listed below support this type of highly customizable bidding:
Shopzilla – Bizrate
Smarter.com
NexTag
Pronto
Expect to see this as a standard option within the next 2 years at most comparison engines, and very possibly integrated with cost per acquisition (CPA) models.

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