I am looking for a source for perlite. Of course I can buy it at Home Depot, Walmart, or the local nursery. But that's like 3 or 4 bucks for a really small bag and it tends to have too many fine particles, I'd prefer a more coarse grade. I'd like to find an inexpensive source for large quantites, like 2.2 or 4 cubic feet.

Lots of places sell it online, but shipping charges for something that big are cost prohibitive. Anyone know of a place in central texas area. (Austin - San Antonio corridor)