@ihtaekim is looking for the 504. There is a barely use pros504 that was asking price is $200, since yours is new, my price is right guess is $250 to $275. My price is right guess for the hoh is $200.
$235 on the NP7 is a great deal (it's basically a custom). Plus it plays wider than the available horween NP7-2 (and not many NP7-6's out there at all).