You may also try the Scottish Tartans Museum in Franklin, NC. They have a wide array of hose available, from the inexpensive acrylic all the way up to hand knit kilt hose and balmoral hose (so anywhere from under $20 to over $130 at last check).

http://giftshop.scottishtartans.org/hose.htm links directly to their hose page. They also have a good assortment of garters.