Generally speaking, international outside of Canada is cheapest using 1st Class USPS and runs right around $24 if shipping the typical LP mailer. I'm open to correction, though.
Needles & Grooves
debianlinux
djdavedk
postcalc.usps.gov
Postage Price Calculator
djdavedk
$27.75 for First Class International by my estimation. PayPal might give a discount.