I don't sell on ebay or anything, however, I have bought bags there and I have seen sellers ACTUALLY pay up to 30.00 on shipping for a heavy bag. That particular bag she is selling would not cost that much to ship BUT for heavier bags that include signature confirmation and insurance it is possible to pay a lot.
Clarifying:
I was talking about http://www.ebay.com/itm/Coach-Madis...WH_Handbags&hash=item337b743833#ht_500wt_1198 that was originally brought up in the deals thread.