Do you have the Magnetospeed V3 mount with 24 inch rod in stock?
Unfortunately I didn’t know about a Canadian dealer until just now and already bought this directly from them in the USA about 3 weeks ago now (the 2x12 inch rod sections that screw together version was $265 CAD shipped)
They said they are still being anodized but would be ready this week, who knows...
Your shipping calculator shows $27 shipping and after adding GST comes to $302 shipped.
If you have in stock today I may try and cancel the direct order as will probably get nailed with customs fees and taxes anyway which would be close to the $37 difference and who knows how long a wait in the customs clearance jail.