Sierra Trading Post has ECCO and Lorpen socks, don't know the quality, etc, but they're 80% off. There are links to two below, but there are other ones on sale, you'll have to search the site, add stuff to the cart and see if the discount works.
Use promo code YZY5157W
http://www.sierratradingpost.com/ecco-merino-wool-hiker-socks-crew-for-men~p~5739d/
http://www.sierratradingpost.com/lorpen-cold-weather-sock-system-merino-wool-over-the-calf-for-men-and-women~p~6278d/#11_6,6_0_cdf9e134a6f5f8_{"id":3,"result":true,"jsonrpc":"2.0"}
Use promo code YZY5157W
http://www.sierratradingpost.com/ecco-merino-wool-hiker-socks-crew-for-men~p~5739d/
http://www.sierratradingpost.com/lorpen-cold-weather-sock-system-merino-wool-over-the-calf-for-men-and-women~p~6278d/#11_6,6_0_cdf9e134a6f5f8_{"id":3,"result":true,"jsonrpc":"2.0"}
