Canadians can also self clear packages in person at a CBSA office through the Courier Low Value Shipment program [1], if the value of the package is under $3300. It's a bit of a hassle, but has saved me >$100 in brokerage fees on some packages when UPS Ground was by far the cheapest option.
[1]: https://www.cbsa-asfc.gc.ca/import/courier/lvs-efv/menu-eng....