Greg, there may be better prices, but I paid $30.00 a bag from Estes Sept 2008 in the D-FW area. I don't know if there are different forms of Alum, but the stuff I bought was almost like very tiny beads, so there was no dust. I did some searching around on-line & in the phone book and that was the best deal. That price was for me to go and get it..good luck..du
