http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=17614
What a deal so I bought 50 of them with free shipping so now they're on backorder, lol, but keep an eye for them because they'll have them back on there on the 19th of March.
I just bought 50 lbs of hay from here with free shipping so that amounted to just a $1.03 per pound of hay. Not bad!
http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=17281