I hear ya. The only input on that matter I have is that the Masen preban 30's are the best I've seen for aftermarket. The magazine gallery should help everyone to identify the Masen's at gunshows, pawn shops, etc. I've had pretty good luck going to Military Surplus stores, especially in larger cities. Everytime I go to Chicago, Boston, Minneapolis, Memphis, wherever, I look for more surplus stores. Commonly, pawn shops have no clue as to the value of some things. If you ID a 30 rnd Ruger mag, it might be stickered at $20!
Then again, I've seen a used
plain-jane Mini-14 blue at a pawn stickered at $680! I just chuckled, and the guy said "What?"
I told him he was about $200-220 high. He wouldn't budge on the price, even though I wouldn't have bought it anyway.