Both of those are the ones I found; the backyard gardener one seems awfully expensive don't you think? And the other one, on the Canadian site, they don't even have the listing any more. That was where I got my original batch from. Oh well, maybe next year they'll have them again. Like you, I already have enough on my plate
Speaking of plates - how's that for a segue? I made three big planters and two smaller pinch pots with hypertufa - yes, I finally got some done. The planets aligned, I wasn't tired, and I had some time. It took all of about 45 minutes, from mixing the stuff to wrapping it all up in plastic. The three bigger ones are in the veggie garden, using the soil for molds. The pinch pots are in plastic bags, but not ziploc ones. They're actually easier to use while you're forming it. Pictures to follow when they come out of the molds. Lots of fun.