Why do Christians charge so much to go to their Church?

What I mean to say is, is it really christian to tyhe people into bankruptcy. Does good really want you to go to a crystal cathedral to honor him? Are these people running the mega churches really have their congregations best intrest? Is it fair for the pastors wife to wear a $3000 dress while the people in the pews are having to take the bus to get to these services? Do they really need multi-million dollars sound systems? Would this money donated in the name of god be better served helping the community this church is in? And do they really need to go to third world countries to save people? Arent there plenty of people in each american city who need our help jsut as much or more than the third world people?