$50 to lift weights for 1 day? That can't be true. 
You don't go to lift weights. It's like going to Disneyland or to the zoo to look at the animals. Maybe you'll meet a celebrity, your favorite pro bb or your favorite gay porn actor. It's worth it.
I would never pay that.As for a getbig meet-up, after the workout mix up a one gallon protein shake in a big jug and stick in lots of straws. Forced intimacy helping you to get to know each other.