ok. let's all take a deep breath.
since the shipping policy is posted at the website, it will make more sense to call with an inquiry rather than a complaint.
they might or might not refund the difference between the shipping charge and the postage cost. remember, though, that they are not obligated to do that since their policies are posted where customers can find them.
part of our responsibility as consumers is to gather all available information before we commit our funds.
please contact the company to see what you can accomplish.