I've looked and looked for this stuff. The pet stores dont stock it, the only place I can find it is eBay and its 15 dollars for a 2/2 inch square of the stuff plus shipping and handling. Anyone know of a better price or supplier in the US? I would do it for cheaper if anyone on the forums can offer me a better price or if you have some where did you buy it from. I've never bought anything online so I'm wondering if plants can survive that long in a dark box.