How much lube should I prepare for the import fees?
If they’re coming by USPS, then Canada Post may charge 13% (PST/GST), depending on declared value. $200 USD seems to be the magic number where they begin to charge tax, although the official number is $20 CDN.
If you use UPS or Fedex, expect to pay PST/GST on any shipment over $20 CDN, plus brokerage fees of around $75, regardless of value (even if the shipment is only worth $5)
Also don’t be surprised if a mailed package takes 4-5 weeks to clear customs. International mail is super slow due to Covid.