What would you pay for the Sub?

[rolexnewbie2]

I'm sorry but as you can tell I am new. I am still trying to acquire my first Rolex via a Submariner. I found this one, the pictures aren't great but the guy assures me it is authentic and is in MINT condition. He is in the process of sending me some better pictures but from what you can see what do you think? I believe it can be had in the middle $3k range but I'm not sure about buying things like this on Ebay, Assuming all is true what could I take it in and expect them to buy it for, assuming I wanted to trade it? I know I am scatter brained but I need a Rolex and it's Christmas :)

Here is the link:

http://cgi.ebay.com/ws/eBayISAPI.dll...#ht_500wt_1156