6 years old, it is the one with the commercial mower chassis and drive but has the 23HP Kholer, ZT HD I think.how old is it?
which ZT (ZT XL, ZT HD, some other one?), maybe give the model & serial no.
Yes it is the beffier model. Seems like it was about $4,800 new.I'd do some Craigslist searches in the area or other cities to see approximately what they're going for.
Without looking it up and seeing pictures I'm only assuming it's the beefier model than the standard homeowner grade. You rarely ever see those in running condition for less than 21 to $2,800. Even the 4-6 year old homeowner ones people ask 1500-1800.