I'm looking at a 2001 Grasshopper 618 with 48" deck. It has 500 hours on it and they are asking just over $4000. Is that a fair price? I'd also be curious about a good price for the same model new, especially if I could pick one up this fall when dealers are trying to thin out their inventory. I have an acre to mow and have quite a bit of trimming so I'm pretty set on getting a front-mount mower. Thanks.