http://www.ledshoppe.com/Product/com/CA2029.htm - US$3 shipped
http://www.ledshoppe.com/Product/com/CA2018.htm - US$3 shipped
Even better @ $3.00 shipped to your door; don't even have to get off yer arse or the internet. Takes awhile because they ship from Hong Kong (2 weeks?), but they work great (I have the one in the first link; blue in color though). I'll assume since it's a low value item, you shouldn't get dinged by customs.