[Utah-astronomy] Odyssey 1 (13.1" f/4.5)

A colleague of mine at work has an Odyssey 1 (13.1" f/4.5) that he picked up second hand at the Hanssen Planetarium many years ago. He wants to sell it, preferably to someone local (its heavy, he says 120lb!). Can anyone suggest what it might be worth? A smaller Odyssey Compact (10.1" f4.5) recently sold for $245 + shipping on AM. Cheers David