And as Dennis suggests, with the Global Shipping Program you would also be charged Canadian duty (possibly), Canadian sales taxes on $100CDN (or on $130 CDN if the price you mention was in US funds) and a service charge of about $5USD before the seller is told to ship.
With USPS shipping, and being fairly bulky, there is a good chance that on your doorstep, the carrier will charge you duty, sales tax and Canada Post's service charge of $9.95CDN.
If it is not bulky, it might not be charged, in which case, buy a lottery ticket.