I'm thinking of selling my 3 year old Ferris 3200Z with 38 hrs. It's the 37 EFI Vanguard and the 61" deck. As you can imagine it's like brand-new. Even though it manual says oil changes @ 500 hrs. I've changed the oil with Mobile 1 15w-50 two times since owning it. The only thing that hasn't been serviced yet is the oil change in the hydros. Preparing to do that now. Any idea what this unit would be worth in south-east PA? I've only used it for my personal yard. Selling to either switch to service OR get a stand-on.