Express shipment are done with:

DHL, UPS, TNT or FedEx

An example of 5 lb (2.27 Kg) shipment is:

4 Time Magazine (0.35 each) 1.40
4 NewsWeek (0.25 each) 1.00
The Economist (0.45 each) 1.80
15 letters (0.05 each) 0.75

Total:

 4.95