I ended up selling mine on ebay for $1200. I might've been able to get more if I'd been more patient, but I really just wanted to make the sale (I recently saw the guy who bought that horn from me trying to sell it himself on ebay for $1500, but no one was biting). Yours seems to be in better cosmetic condition than mine was, so maybe you'll have better luck than me?
Sean Kissane
Low Brass Specialist, Paige's Music
Principal Euphonium, Indianapolis Brass Choir
Principal Euphonium, Crossroads Brass Band