Help, real or fake

[Timwilkinson]

please help, i am looking to buy my first Rolex, a second hand sub v serial, i am a little bit apprehensive as it is a lot of money and on eBay. i am to far away from a dealer to check it out. i need advice on what to look for in a genuine 2010 v in black. are they all ceramic? This link is it, what do you guys think?

http://www.ebay.com.au/itm/Rolex-Sub...64166943559238