I'll see your unlisted rental/phone fees and raise you... UPS. You pay for a package to be shipped to you, based on the weight, size, destination and description of contents provided by the seller.
Package crosses the border.
Border agent charges you a small amount to cover taxes, and then *doubles* the cost of your package in brokerage. Sometimes they'll ding you at the doorstep, sometimes you'll get an unexpected "present" in the mail in the form of some butt-puckering bill.
Fedex is similar in fees.
USPS/Canada-Post do not screw you this way. In the odd case where they do charge you fees, they're much more reasonable.