You can always self-clear your package. Then they don’t see any extra fees from you.

Super simple

1. Tell them to email you the commercial invoice.
2. Bring invoice to Canada customs and pay any duties or taxes-they stamp your paper.
3. Bring stamped paper to courier and they have to give you your stuff with no additional fees.

Done

Done it many times. Super easy here because UPS and Canada customs are a 5 minute drive from each other.