Yeah, 'free' is never really 'free', at the very least you're giving up your valuable time and potentially more than that. A friend of mine went to a 'free seminar' with a 'crypto expert' a few months ago, and all it turned out to be was him trying to get people to join his platform. Plenty of people signed up apparently too, all looking to make quick money, when all they're really going to end up doing is spending more than they should on information that is freely available if they spent a bit of time looking. I guess fair play to the guy, good salesman, it's easy to catch fish when they're hungry.