I haven't purchased anything on ebay for 6 or 7 years, and I've realized that I don't know or understand how it works anymore. When you bid on an item, do you put in your highest possible bid and then ebay will just raise it incrementally? That's what I thought I understood from reading their website, but I'm not sure. I'm worried that if I do it wrong, I'll be stuck paying more than I want to for items. (There are quite a few IO maternity clothes on ebay that I'd like to snag.)