Facebook Marketplace, eBay and Craigslist are among the most ... as well as some of the best-selling items historically. Even the best item may be slow to sell online if it’s not marketed ...

Well, it’s April, and McDonalds sauce from 1998 is one of the hottest selling items on eBay. Only it’s not actually the sauce, it’s photos of the sauce, and one such photo has a current bid ...