Bing has a Shopping service you can upload to for free. That Shopping service also displays paid Shopping.com listings. They recommend the paid route for "higher visibility" and state that if you upload to both, the overlapping listings will be displayed from your Shopping.com feed.
Has anyone tried either of these?
Is there any way to list for free on Bing Shopping and pay for Shopping.com listings elsewhere?
Bing doesn't accept the Google Shopping feed format. Does Shopping.com?