Brand new Savage X rollers go for about $225-$250.... I THINK. The ones I have seen don't include the radio, engine, wheels/tires....

Your's will be fairly complete except for the engine, so that should somewhat make up for it being slightly used, if you decide to go the roller route.

I bought a complete LST2 setup(with pitbox) for $400. It had less than 2 gallons on it, and I had run alot of that through it. The last used one I bought was the Mad Force kit edition with servos for $180 or $190 shipped... can't remember exactly. It supposedly had 9 tanks of 10% through it at the time. Used stockers don't go for much unless they are in excellent condition.