Reynolds
You do not have to list what the shipping charges will be in your auction. If you are selling car parts just say the high bidder will pay actual ups shipping charges in the item description. After the auction have them send you their city & zip. You can go to
www.ups.com to figure the charges. The shipping charges are usually dead on as long as you give correct box size, weight etc. If an item is bulky but lightweight, you may be charged an ups oversize charge-but that will show up in the rate page on ups site. Beware of sending them a price based upon the ups website and then ship from a Mailboxes etc. type of shipper. These places add their very hefty cut/profit on top. I take my stuff directly to a UPS customer counter.