How Does Disney Movie Club work?

when you purchase the 4 movies for 1 or whatever to become a member, do you get the 4 movie right away in the mail? or do you have to purchase the five movies in the next 24 months first to become a full time member for life?|||You'll get the movies right away but you will be contractually obligated to buy other DVD's at about $20-$30 each. It seems like a pretty good deal.