Kona is right, Walmart has a twin pack 16.7lb bags for $8.94 plus tax. I have read on other sites that you really need to order online for your local store pickup otherwise the workers don't know what you're talking about if you just show up to get them. When looking online, you have to scroll a bit before you see the twin pack "special buy" price. I ordered a max of 10, just need to go pick it up in the next week.