I know this reply is late and you may have already sold your mower, but I bought a used 2004 (?) DYT4000 with a 24 hp B&S with 42 inch cut deck for $450 here in central Iowa. I found when I got it home and started going through it, there was a lot more minor things needing attention or fixing. So decided it was only really worth about $350 to $375. But over the summer I worked on it and replaced or fixed stuff as money allowed, and mowed with it also as the summer went on. Now it is in pretty good shape, just a couple minor things left that dont affect the way it works or runs, and is worth more like $500 to $600, maybe slightly more. My advice, as I found out, do plenty of checking around, craigslist, newspapers, friends, etc. a while ahead of when you figure you will need the new(er) machine to be able to kick the tires and check them over well. Thanks and sorry for the lengthy repiy. Have a good one.