l'm wondering if they're are blue books for used mowers (like the ones used for autos.) I bought a 2001 Ferris walk-behind for 3900. The dealer said it had about 200 hrs but when I got a hold of the previous owner and he said it had 80 at the most. 52" deck dual hydro. I also found out that that original owner bought the mower from the same dealer for 4000$ new a year earlier. I know this isn't' a lot of depreciation over a 1 year period but I'm thinking the guy got a great deal to begin with(damn salesmen!!, they always make you think you're getting a great deal!!!) So anyway does anyone know what kind of deal this sounds like and is there such a thing as a blue book for mowers. Thanks.