I've been wanting a Kubota for awhile now and just came across a 1990 BF550 with loader and tiller. It is in desperate need of some TLC but starts and runs well. It has 1800 hours on it...should that be a concern? Also, having a bit of trouble finding info on the BF550. Anybody have experience with this tractor? Oh, and the asking price is $3500. Reasonable?