well, got the cart today, the label wasn't in any kind of museum quality shape, so i had no qualms about making a small crease in it...
no SNK anywhere on the boards, and a windowed EPROM on the bottom board, in the bottom left-most position (if the label/spine side is facing away from you)...the label on the cart looks authentic, with 1 serial intact, but over the screwhole nearest the position of the EPROM, there's a label that reads "HK" and has several chinese characters on it, similar in size to some of the small numbered labels on legit japanese carts i've gotten from places like mdgamesales.
i know waku waku is a sunsoft title, so that may have something to do with the absence of any SNK branding on the boards, but somehow i doubt it.
casey mcmahon? cody myers? CM? both located in FL? i'm pretty sure i've been had.
what should i do? if i send the cart back, i'm pretty sure i'll never see a dime of my money, so i'm just contemplating cleaning it up (cuz it's filthy), and learning a $70 lesson...