[Butchy]

I finally bought a Luger, and I couldn't wait to come on this board to find out more about it. I bought it from a longtime friend and co-worker who inherited it from her father-in-law. I believe she sold it to me for a very good price. ($700).
It's a S/42 Mauser made in 1936.
It has a serial number of 924 and is all matching.
It's obviously not a museum piece, but I just got it to have one.
Is there anything unique about it or is it a run-of-the-mill Luger?
I would like to give it a good cleaning. Are there any cleaning products to avoid?
Am I correct in thinking I got a decent deal on this particular Luger?