Unfortunately, unscrupulous merchants like the one you dealt with are going to spoil things for honest merchants. People will eventually catch on that they're being fleeced and decide not to order anything over the Internet. I've gotten so wary that I'd have gone to the Contact Us section and left them an email clarifying the postage situation. I won't deal with PayPal at all, because I got taken once by them, and they were not willing to correct their own error. Bah humbug!