nohurry wrote:
I ran the value for an 2011 F450 Lariat W/40K on nada, and it comes to $45,000 clean retail. I would say your truck is worth somewhere north of $50K. Just a guess on my part though. Is it lariat trim? Crew cab? 4X4? etc. I wouldn't mind seeing a pic of it just for fun if you can post one. Good luck at any rate.
Over $50k for a 5 year old truck with a first year engine and weak exhaust brake does not sound like a great deal, but like you said, you don't see them much and they are expensive new. If it really has air ride that will add to the value a little.