Pawlowski6132, I have had similar experiences with the USPS online quote versus the price at the counter when shipping internationally. I use the USPS all the time, but their rates are damn confusing.
Recently, a Canadian transaction partner quoted me the appropriate price for some tubes I was mailing, yet all the info on the USPS website pointed me to a postage amount that was nearly triple the actual cost.
I refunded the excess postage to him, too.
Recently, a Canadian transaction partner quoted me the appropriate price for some tubes I was mailing, yet all the info on the USPS website pointed me to a postage amount that was nearly triple the actual cost.
I refunded the excess postage to him, too.

