eBay

I don't understand, I have a message that 3 items I sold are eligible for Second Chance Offers.Why would I try to sell a sold item a second time?

I can enter two similiar items and get 2 different USPS first class shipping costs suggested.The size of the item seems to be stuck on 7x4x4 and will sometimes revert to that over what I enter.Somtimes the starting bid on auction items seems high, es...