Shipping estimates (based on Canada Post website):

CANADA

Stamped Letter mail (not registered, no tracking) = 2.5 CAD

Lettermail (registered) = 12.5 CAD

XpresspostTM Prepaid Envelope - 2 business days (Guaranteed), signature, tracking - 16 CAD

USA

Stamped US Letterpost = 2.5 CAD

Canada Post Small Packets - USA - Air = 8 CAD

Canada Post Tracked Packet - USA = 14.5 CAD