I put an order in at our local Farmer's Co-op, Hardwick, MA. Just called and it is in. They have 119 bags at $4.29 per bag. I need about 600 lbs, I'll pick up extra and just LMK if you need some.
It is Yard Right Tropical Play Sand http://www.crabstreetjournal.com/products/substrates/tropicalplaysand.html