They're available from Full Compass Systems for $142.50 if you call them on the phone. You'll have to wait until they get them in on the 15th for shipping though. I paid $186 for the 'phones and next day shipping to Alaska.
does anyone know if I need to reference anything or ask for anything special with FullCompass? I've never dealt with them before and the website mentions a "call for lower price" for some items, but not the 840s.