Even if the CLA exceeds the market value of most bodies, remember that most of those bodies have not been CLA'd. With a CLA, you have a camera that should serve well for a long time. So market value isn't the last word on what to expect a camera to actually cost. Still, a CLA is fairly cheap and the purpose of the CLA is to put the camera in reliable usable condition, which is always a question mark with a machine which has not received a CLA.
Bottom line, even after a CLA, the camera's still not expensive and resale value isn't really the point.