Two things:

1. Amazon _will_ ship to Canada - maybe a specific vendor won't.

2. Check the Lee Valley Tools catalog (or visit a store, if one is close to you). They stock the Norton stones that Larry (at Whipped Dog) is cutting up.

If you have a sharp razor, the Norton 4K/8K stone may be all you need to keep it sharp indefinitely. I think they're around $80 at Lee Valley. I finally bought the 220/1K and 4K/8K, after messing around with sandpaper and "micro-abrasive film" for months. No regrets.

An alternative (if your razor is already sharp) is to buy a "chinese 12K waterstone". There are several sources online. They're cheaper than Nortons, finer-grained, but are supposed to cut very slowly.

Charles [Vancouver, BC]