I am building a new home on 3 1/2 acres and I am looking to by my first JD riding mower. Looking to buy a good used tractor in the $3,000-$5,000 range. Was looking at the 300 and 400 series of tractors. What could I expect to pay through a retailer, private seller, and/or at auction. Basically I am asking what is the best used tractor (without a lot of hours) that I can get in the $3,000-$5,000 price range that would handle mowing 3 1/2 acres. I am checking out an auction this weekend and trying to get a feel for what a good price would be. Thanks for any help that you can give.