Here in Canada, Canada Post is a crown corporation who don't deliver mail on Saturday (except for the Xpress Post Saturday service). They were beginning to require subsidy to artificially keep first class costs low. Their response? Canada Post now owns a %91 stake in Purolator Courier! They make more profit from that to partially pay for First Class mail, and still reported $281 million in net income for 2009. In any case the fact USPS can send a small, lightweight box from Florida to Toronto Canada for $5.53 is remarkable! The same box by UPS would have been over $20 and I would have had to pay brokerage or make arrangements to clear the package myself! Even to send the same box back to Florida from Toronto would have been almost $10 by Canada Post!