Our local Meijer Store carries Fox River socks. One variety has 85% wool. They list for 9 bucks. However, after the deer season, they get reduced to 3 or 4 bucks. I pick up a pair every time I go there. Got a drawer full now.

They are not 100% wool, but then again, 85% and the price ain't all bad.
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That which does not kill me has made a grave tactical error.