Well, one year (or less) old coaches are fairly rare, so in that sense its a find. But you didn't mention the length, floor plan, number of slides or any other salient features, so it's hard to evaluate the pricing. The MSRP on a 2012 Georgetown XL ran from about $126k to $132k and you could have bought it new for 20%-25% below that, so $85k for a year old, used one is not actually a steal. But if it suits your needs, it is probably a fair price. Of course, you can (and should) make a lower offer and see where the negotiation goes.
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL