Standard should I cop (6mt G35 coupe)

There's a listing for a 2004 G35 coupe with the 6 speed manual overdrive transmission with 73.5k miles on it. The exterior is red, and interior is black/graphite. From what I can tell the interior is in pretty good condition (no tears, leather is in good shape). The car is listed at 13.5k, but I might be able to get it down a bit.