List price on the GT345 is $8369, so you dealer is giving you a 10% discount. That's pretty good. You might be able to talk him into tossing in a free cart, but not much more than that. The GT345 is close to the top of the line in Deere tractors, and the price reflects that. If you want to save a little money, the Deere GX255 lists for $6599 with the 54" mower and offers almost exactly the same capabilities with an air cooled engine. The Cub Cadet 3235 with a 25 HP air cooled Kohler is available for $5899 plus the cost of the 54" mower deck, and it is a very capable tractor as well. The Simplicity Legacy (also available as AGCO or a Massey Ferguson clone with different paint) is their top of the line tractor and actually costs more than the Deere GT345, but offers 27 HP and optional 4 wheel drive. Can you take your dad to different dealers to see what he is comfortable on? Especially for leg room, belly room (if needed), ease of getting on and off, ease of using the controls, ease of removing the mower deck for cleaning and maintenance (some of those 54" decks are a bear to get off), ease of hooking up attachments, access to engine maintenance like checking or changing oil, or filters. What is a great machine for a tall left hander won't "feel" right to a shorter right handed person. And in this range of machine, he will be operating it for many years, so "fit is important. Have fun shopping!