Peter beat me to it. I get my strings from Euphonon, and it works out to just a little over two bucks per set. I also get my mandolin strings there. Funny company -- it's mail order, but they don't accept credit cards, so you have to mail them a check and then they mail back the strings. Good idea to call the first (they answer the phone "Hello?") to make sure you understand the shipping/handling charges, extra costs for straight (non-coiled) strings, volume discounts, etc. But it's a good deal.