I am patiently waiting on my green clay to arrive. I found it here for $8 a pound and they have lavender water as well. http://www.snowdriftfarm.com/clays_and_minerals.html
As for proportions, I use 1 tablespoon clay to 1.5 tablespoons water. After mixing very well, that gives me a pretty nice spreadable consistency.
Was about to place my order after seeing this thread, until I saw a thread about QED soaps. I was about to tack a container of lime soap onto my order and found it was out of stock.
Matt S, I have found that if I am having any skin issues, the clay cleans them up nicely. I've never had an issue with it irritating my skin.
I'm going to go out on a limb here and say the Blue Man Group auditions didn't go so well....