This is not a scam. I'm saying this out of experience. I got the invitation to the International Scholar Laureate Program because I participated in the National Youth Leadership Forum. Comparing the two invitations, the director is the same person. Therefore, it is logical to conclude that this is not "fake."
I believe that one can definitely learn a lot from what the program offers - not just from the discussions and workshops but also because it is an experience of a lifetime. To be able to travel and learn with peers who share the same interests as you.... seems fun.
It IS very pricey, however. I cannot afford the trip, but if I find a scholarship for it, I will go. And if you're rich and the price isn't an issue... go for it b/c I'd love to be in your shoes. Hope this helps =]