Mike, welcome to the forum~!
Except to pay; $600-$700
The nicer it is, the more, if all matching, then more to a lot more
you can find them cheaper, and it does depend on if it is .765mm (30 luger) or 9mm (9mm is more expensive, but cheaper to shoot).
Kinda decide if you want a WW1 era, Weimar era or WW2 era luger (or even newer, such as the Mauser or the mitchel/orimar/stainless).
ed