Can I buy an iphone 5 off Ebay and set it up with Straight Talk?

Can I buy an iphone 5 off Ebay and set it up with Straight Talk?

Yeah, as long as it's a GSM phone and unlocked. GSM is an AT&T phone.

So go to eBay and look for an unlocked iPhone 5 for AT&T, used or new.

You could unlock it yourself, but it may be a little tricky.

http://www.ebay.com/sch/i.html?_trksid=p5039.m570.l1311.R1.TR2.TRC1&_nkw=iphone+5+unlocked+at+t&_sacat=0&_from=R40