Where can I buy a lumia 830 rm-983

Im in the US using ATT and according to my research this is the specific white listed windows phone that will still work. I've been searching everywhere and can only find lumia 830s on ebay from China that can't confirm if they are the correct model. Looking for one in good condition no cracked screen preferably in white to start using daily as my main phone. From my research only the rm-983 version of lumia 830 will work.

If anyone can help me find this I would appreciate it :)