I have one (275 2005) and it has been great but it is a Gen 1 and there have been various upgrades that you must check have been done.
The only place to look is the Verado Owners Club forum
Information for New/Prospective Owners
Everything you need to know and a lot more besides.
Good luck, until recently there was nothing else like it as a package and everything else felt agricultural. Fly by wire and electric power steering are now more common but in 2005 it was from a different planet.