That is not a Pro-4X. It's an S 4x4. The wheels are wrong, it doesn't have the roof lights, and it has the same seats I just pulled out of my rig. You can also see on the photos of the interior that it has the open pocket next to the 4x4 switch, instead of the buttons for the hill start assist and e-locker. As previously stated by a few members, you can't really trust what the dealerships say about the trim levels. There is a guy in my neighborhood who swears up and down that his 2006 Xterra has the "Nismo Offroad Package." He bought it from a dealership in the Midwest brand new, and they slapped a "Nismo" sticker on the airdam (which isn't even the correct font and seriously looks like it was just made at the swap meet), a brush guard and a pair of cheap aftermarket driving lights on the brush guard. I'm sure they marked it up at least $6 or $7k on him, too.
I paid $17,500 for my S 4x4 which was 2 years older than this one at the time of purchase, but also only had 33k miles. So pricing is more or less in line with the going rate (if you can get it for $19,500 or $20,000), but it's not what you're looking for.