Shopping.com Partners Resource Center Blog des développeurs

That's right...  Search by Offer ID is now available in API v3!  You can now recall not only individual products, but specific offers as well, allowing you to provide bookmarking or wishlist functionality for your users, or create cross-category promotional listings.  More information on how to use this new feature can be found here.

Stay tuned - more of the features you have been requesting will be available soon!