Why is life to expensive?

I don't understand why everything has to be so much. I was invited to yet another amazing trip and a great opportunities to going father in life and guess what it's 1500 dollars! People to people is even more but this is the bloody National Young Leaders Conference. In D.C., It's a once and a life time chance and I really want to go. I think I am going to have to work something out with my mom and maybe ask my grandparents for help and drop the people to people idea.