First Class Airmail shipping is 50 cents per shipment inside the USA and $1.00 internationally no matter how many items are included. Priority mail is $4.60 inside the USA and $13.00 internationally. Registered mail is $11.00 inside the USA and $13.00 everywhere else. Please be patient about shipping. I spend much of my time at my 2nd home in Mexico and it is a 120 mile round trip to the US post office. As a result I go once a week, usually on Friday or Monday. The post office I use is closed on Saturday. Payment by Paypal or Moneybookers is strongly recommended to avoid long delays in shipping. Note: Your 50 cents/$1.00 payment for shipping covers shipment by 1st class airmail letter. The US Post Office does not offer tracking numbers for 1st class airmail letters. If you need a tracking number, there are other more expensive shipping methods available that provide one.