Just did the math comparing to local price for small batch at Home Depot. I can get 432 cubic inches (which is .25 cubic feet) for 3.97. Figure in 7% sales tax and cost is 4.25. It would take 24 of these to get to 6 cubic feet, so that would cost $102. The all in price of this deal is $56.50, which is about a 50% discount. However, for me, to have to buy that much at once, it would probably take years to use it, so I'd prefer to buy the smaller ones. But it sounds like a good deal for someone who uses a lot of it or has the space to store it indefinitely.