This may be a price mistake! Amazon has Thorlo socks buy 2 get 2 free! These NEVER go on sale and are amazing socks, especially for those that work out a lot, hike, or run! Normally these are $13 a pair (I know WOW) but with this sale you can score 4 pair for $25 shipped!
Add four pair to your cart (sold by Amazon) and in the final screen the discount will be applied!