That is good in theory, but I have seen M38A2 scopes go for more then the real deal M38 on Ebay...
It's all about timing and finding the auction no one else is paying attention to...
I am actually looking for an M38A2 model to part out, as I need a front lens for one of my M38s that has completely different front and back lens, but the last few on Ebay that I have come across closed for more then I paid for any of the real deals I have...