I just sold a all blue aluminum Duratrax Max ST Pro w/ a Os .18cvr. RTR with Futaba radio and got $200+25 shipping.
Here is the description I gave:

With the Os .18 and the 2 speed adjustable tranny this is the fastest Stadium truck youll ever drive. It pulls wheelies on command and screams at high speeds. The Os 18 only has about 12 tanks through it and has been taken care of. The truck has almost every hop up available including: Aluminum A-arms, aluminum belcranks, aluminum hubs and hub carriers, aluminum servo horn, aluminum threaded shocks, aluminum chassis and radioplate, aluminum centergear in tranny. Hopups also include a micro-venom temp gauge, steel gear differential set, custom fitted fiberglass vented brake disc, Os .18, and a tuned pipe with exhaust deflector. Servos have been plastic dipped.The radio is a Futaba radio with throttle trim, steering trim, servo reversing, steering d/r, Throttle epa, steering epa. It is the futaba MJ T2phka.

In reality the truck I sold wasnt as nice as yours, but it looked better. On Eba* its all about looks to the newbs.

You should be able to get like $270-$300 tops