Be careful with ebay, make sure anything like a psu or gpu is stated exactly as to what you are getting. There's many ppl who have older stock/used psu's that will have the same name but not same as new psu. Corsair CX/M, HX, TX have all had serious revamps and new editions are far superior to the old stuff, yet have the same name. Just a different look. Some less reputable sellers know this and will send old units but post pictures of the new units (with a really small fine print disclaimer that actual objects may not look the same).
Personally, when buying a psu or gpu from eBay, I'd stick to the actual etailors like Amazon or Newegg etc who also have listings there, and not go through private individuals unless you've a trust with...