Do you need the lens? I suppose you could sell it - they are common, but if you price it at $150 it may sell.
FWIW, on my local CL, there are 7D's ranging from $900 to $1100, and the $1100 ones (there are two) include either a 28-135 lens or the BG-E7 grip.
As for testing, if you can, bring a laptop with EOSInfo (40D shutter count on Mac) to connect and test shutter count, you can grab a tethered shot and immediately look at 100% mag, check the battery status in the menu (my 7D is from 2010 and both batteries still show three bars, but my 5DII was 6 months younger, and both batteries were down to two bars). Bring a lens of your own, one you know is sharp and centered, and check sharpness with Live View AF. Shoot a dark frame and look for hot/stuck pixels. Bring a small flashlight to look inside the battery and CF compartments for any evidence of moisture/corrosion.