these people are scammers. they have no intent of selling any camera or other electronic device without trying to sell you a "discounted package", which puts the price up over any reasonable price one would pay.
plus, once they have your card number, they refuse to cancel your order, and put it through anyway.
I am currently working with my credit card company to contest the purchase, but don't think I can win.
don't work with this company unless it is to testify against them in a court of law.