Cross sell works
…at least in a Yahoo! Store with the optional cross-sell feature. Average order values are consistently higher for this retailer:
Note that the cross-sell traffic segment includes only visitors who have clicked on a cross-sell link. It’s not an AB test, but I think it does show that Yahoo!’s cross-sell algorithm does a good job of displaying relevant cross-sell items that lead to larger order sizes. Also, as I mentioned earlier, this is only one example, but I don’t see how enabling cross-sells could hurt . It’s easy to implement and doesn’t cost anything extra.