I've found a company here in the UK with a bit of a sale/deal on Argyle hose in some colour ways at a reduced price

http://houseoftartan.co.uk/products/clanhose.htm

They had medium size in the following 540 541 542 543 1562 548



£56 for the first pair then £30 there after or three for £30 each plus vat and postage,

May be worth an email to see if they'll ship over the pond