No, it's coming from me via standard ground. The issue is that shipping from TX to Canada just is really expensive via USPS/FedEx/UPS. Come to think of it, I never checked DHL, perhaps they'd be more reasonable...
USPS is typically the best for US-Canada shipping. Did you bring the packaged blade to the PO to confirm the rate? I'm surprised it wasn't around $20-30, I have had several items shipped to me from family in FL in the 2-3 lb range for ~$20
under 6 pounds you can do lower with the post office over 6 pounds it cost more. if i recall the cutoff may be 5 not 6 pounds.
once it weighs more you have to use more costly methods.
6 lbs on the dot.