I buy them from tersaknives.com, best price I have seen. They are genuine Swiss Tersa’s
The folks at tersaknives.com are very nice to deal with.
tersaknives.com.
Small, family run business just over the Canadian border and about the best prices going. If you can afford to stock up, they do offer free shipping over a certain amount, but actual shipping wasn't bad when I ordered a smaller amount.
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The most expensive tool is the one you buy "cheaply" and often...