Hello all, Relative newbie here. I've dabbled in G1 Transformers in the past and I have the opportunity to buy a pre rub G1 Soundwave/Buzzsaw MIB ungraded in about AFA 80 condition with a price sticker on the top flap. Top flap stands perfectly straight and I'm reasonably certain this is not a knockoff box. What should I expect to pay for something like this? What would it be worth if I got it graded and it came back AFA 80 or AFA 75? Any help is much appreciated.