Amazon sent out 3.3 billion packages in 2017, and saves $2-$4 per package shipped if they handle it themselves. USPS, UPS and Fedex are all raising their rates.

Amazon sent out 3.3 billion packages in 2017, and saves $2-$4 per package shipped if they handle it themselves. USPS, UPS and Fedex are all raising their rates. You do the math... They also have 50 Boeing 767's, btw.