Msg#: 4290382 posted 7:36 am on Apr 1, 2011 (gmt 0)
I think a lot of sellers do but not necessarily a mirror site. Some will use it to get rid of excess stock / hard to move items from their regular store. It also provides another channel and a way to get your products to a wider audience.
As a buyer I notice the products are often sold with a mark up on ebay to cover their higher fees in respect to their regular online store.