BUG: Incorrect calculated shipping for USPS First Class International Package vs Large Envelope
Many sellers are finding that buyers are being undercharged for shipping when the selected shipping method is First Class International Package. I believe the problem is that the API specifies the ShippingServiceCodeType ambiguously: USPSFirstClassMailInternational : USPS First Class Mail Intl / First Class Package Intl Service USPS First Class Mail Intl and First Class Package Intl Service are different and have very different rates. As far as I can tell, it's impossible to tell which method was chosen based on what's available from GetOrders. I'm guessing internally eBay's calculated shipping function can't tell either and it seems to randomly pick a rate to charge the buyer.