Injector Blades in Canada

Where do you injector users buy your blades?  And are the Chinese Schicks in the yellow package really the best ones?  I'm aware that injector blades are "mini shaper" but don't see a lot of choices for brands other than the Chinese Schicks and the Personna.  Most of the Canadian vendors seem to always be out of stock but I have found them at Well.ca.   Just curious if there are any other or cheaper sources as ordering from non-Canadian based vendors raises the price after exchange and shipping etc.

I was able to buy them from a small local drugstore for 6.99 but not all of them have it. Just look around whenever you see a drugstore. Amazon.ca has it but then there's a minimum of 35 to get free shipping.

Thanks.  I ordered some through a Canadian health and beauty site as the shipping was free with a lower than usual limit and the price was in Cdn dollars.