I've been seeing a lot of Exmark 60 in Turf Tracer walk behind's for sale on Ebay and in Wantads. I was told these machines are from The Brickman Group ( they just returned their 2 year old leased mowers). Are these mowers beat to death, do they do maintenance, and why are they being sold so cheap? A lot of guy's must have bought these and are now reselling them. I have enough headaches and don't want to buy more.