15k difference where? I bought a S250 for 20k. 2004 with 3000hrs. The filters were put on in 2006 and its only had about 500 hours since.
The Bobcat dealer had an S185 for sale and they priced it at 32k. This one is similar, about the same hours and shape, just doesn't have an enclosed cab or heat and the guy wants $17k for it.
The last I knew $32000 - $17000 = $15000. unless they changed it again. Granted my head is spinning from work and buying land, dealing with zoning and making plans to move, so please forgive me if I missed something.