With the new CUSMA/nafta* we have a duty free allowance of $150Cdn and a tax free allowance of $40Cdn.
You would be paying tax on a $70U$/$87.50Cdn item, but that would be from $4.38 to $13.12.
If the shipment was delivered by Canada Post there would also be a service charge of $9.95, but private couriers could charge much much more.
Given those numbers, your $29.50 sounds about right.
Because our currencies have the same name, it is not unusual for Canadians to "see" the lower price instead of converting everything to the same currency.
*This only applies to imports from the USA, otherwise the duty free allowance remains at the same $20 it has been since the 1980s. But that's a job for the federal government.
We also have Free Trade agreements with over 150 nations, with the Trans-Pacific and the EU ones being most important.
