Albertson's (you know- the huge grocery store chain that used to be Lucky's) has an ongoing sale of KoolAid. Their usual price is 3/$1. I was happily surprised to see a sale for 4/$1, so I snatched up twenty-odd packets to use as dye. As our groceries were being rung up, it turns out that if you buy 20, it's 20/$1. (A nickle per packet!)
I went back to Albertsons the other day with a friend, and spent the entire time she was shopping gathering 10 packets of each flavor they had. Now I have 10 samplers to sell on eBay, and they cost me $6.
I am so happy!