I was intrigued, so I checked the amazon.ca site. The blades are not sold directly by Amazon Canada, but by two different marketplace sellers. The ones selling for about $384 CAD are sold by a supplier in Spain. The ones selling for about $1805 CAD are sold by a supplier in (... drum roll ...) Canada! The Canadian supplier is obviously a price gouger trying to see whether anyone is desperate enough to buy at those exorbitant prices.(And speaking of affordability, in my first Google search for sellers, I was surprised to find those blades on Amazon.ca. I was even more surprised when I looked at their price. Her size, 8.75, was $1,804CAD. Sizes 8.5 and 9 were $383CAD or around there. I know I often try different colours for clothing on Amazon and find varying prices for colours, but that did seem rather a large price difference for one small size difference!)
I'm in the US. I once was interested in buying a CD by a Canadian singer that was released only in Canada. I could buy it directly from her website for about $30 US (including shipping). One US importer had it listed on Amazon US for a whopping $3000 US; a second had it listed for $6000 US! Insane.