Jim, how much did you pay?
Shooter prices are $400-$550 in my area if not higher, this would be for a mis-match, reblue or the like.
Here is a good site to get prices;
http://www.simpsonltd.com/LugerRoom/lugerrm.htm
and specifically the "Mauser" section;
http://www.simpsonltd.com/LugerRoom/...ser_lugers.htm
obviously, it matters very much on percent of blueing and if all original.
Ed