No help here, but I remember when those those things were <$100 at gun shows, mostly in 7.63 Mauser. They couldn't give them away, lol. Shooter GI 1911's were $200 and good Lugers were around $300.
I was in high school then and that may as well have been a million bucks. A local "kitchen table FFL" had a barrel of Egyptian 8mm Hakims for $50-$60, you could get Garands for about $200 then as well. Some of those Swedish "pull bolt" rifles were $30-$40.
If I had a time machine, I'd go back and buy them all.
Out of curiosity, where's a good place to look for decently priced Lugers?
The gun I learned to shoot on was a 1916 DWM Artillery model bring-back that belonged to my grandfather. I was seven years old and fascinated by it, I bugged him all the time to handle it. One day he handed it to me,said "learn how to take it apart, clean it, and reassemble it correctly and you can shoot it." (I guess he was tired of me bugging him). It took me about two hours, but I finally brought him the correctly disassembled, cleaned, reassembled pistol. (This was 38 years ago, way before you could look this stuff up on the internet)
I remember him looking at me with smile and and saying, "well, your grandma's not home so let's go to the basement". I've been hooked ever since, though I since learned that no ear protection and a tiny hand-dug basement is not the best place to shoot.