This time it's 7867, and it's being sold by someone in Fredericksburg. It's a shame FRED won't buy it and oust one or two of their cutaways; at the moment, their SLFs are they only thing they have that resembles a real bus.
http://cgi.ebay.com/ebaymotors/1999-Orion-Commuter-Bus-/110810263835?pt=Buses&hash=item19ccce711b
It seems the majority of FFX's Orion Vs are New York bound.