Amazon has a deal on compression socks right now. You have to choose the 5 Black Pairs [amazon.com]
in L/XL for the deal to work. Use code FL92I4FG
at checkout to bring the price down to $7.99. I tried the code in the other sizes and colors, and it didn't work for me, but feel free to try.
They seem to have pretty great reviews, so for the price, it's worth a try!