In my opinion and take it for what it is. Unless you plan to actively participate or utilize their services you are just waisting $50. Nobody will take you just cause you are a member. Maybe if you hold a position that's something that ppl will respect. But too many students just hope that some admissions guy in an ortho program is also an AO and will look favorably upon them. I dunno if that's the case, especially if you don't hold a position and aren't really involved. Do it for yourself and not the CV if u wanna join.