My guess, too. Unless the tractor gets used a whole lot on pavement, 325 hrs shouldn't have the tires worn out. The '09 has the hydro front drive, so scrubbing shouldn't be much of an issue. My '08 has 1100 hours on it and the front tires aren't worn on the edges, and it does scrub (mechanical FWD)
Doesn't sound too well treated, how do you break the hydraulic handle? IMO, keep looking.