Hey mate, I recently got a car from Power Road Car Sales. They're pretty legit, didn't hassle me over the sale and were pretty laid back.
Because that car has the "full Nismo Aero Body with side skirts front Lip spoiler" they'll be reluctant to reduce the price (I had the same deal with mine I got from there) and it has rims which they'll also not be willing to reduce the price on very much. And I also hope you know that photo is photoshopped (same thing with mine).
But overall these guys were really good to deal with, much better than any other dealers I've gone to. I've only had my R34 for 3 weeks now but so far so problems what so ever. There are some other threads on here talking about these guys (all seem pretty positive).
To be honest, I don't seem them going down to 13-13.5k very easily if at all (that ad has only been up a couple weeks) you might have to wait for a bit before they're willing to go down that low.
But thats a very nice 34 so definitely check it out, it'll be one of the nicest auto n/a 34's out there. I ended up spending a little more than I wanted to on my skyline, but you gotta think to yourself, do you rather buy an average skyline and/or a skyline you don't like as much thats in your price range or spend a little more and get what you really want?
Goodluck!