EBay can help here, too. Search eBay for the item you're selling by entering the UPC code, ISBN number, or name. Unless your item is rare, you should find prior listings for it.

eBay CEO John Donahoe: Why in an era of big data and e-commerce innovation would you separate eBay, PayPal and their network effects? Written by Larry Dignan, Contributor Jan. 22, 2014 at 2:49 p.m. PT ...

Whether trying to win bidders on eBay or attract eyeballs on a tutorial or craft site, the best way to stand out is with an attractive, detail-showing picture. Photography tutorial site Photojojo ...