And, consider condition - in the long run, the nicer examples will cost more initially but rise faster in value. However, if you plan on shooting, then find a shooter - its not worth it to shoot a valuable collectable, its really not - you break a numbered part and it drops value in half...
The point is - you can and probably should buy a nice as condition example you can get, but one with some issues, wrong part, refinished, or rougher condition is a thought also
As you can always get a nicer example - so, possibly look for 'placeholders' OR buy some books and figure out what is the best way to go
I always suggest books, but not all folks want to go that route, just buy a nice example, but not mint and you'll do okay (nicer the gun, the more likely it might be restored)