herrschners.com has Aunt Lydia's Double Strand on sale for $1.29 a ball through 3/10. Colors are limited & I know you can double strand yourself, but at this price you don't have to. I bought 2 colors, total of 15 balls & with shipping only spent $27.
I am using the parakeet/royal blue to make a pineapple shawl.
http://www.ravelry.com/patterns/library/vintage-verve