Thanks for mentioning this. We got a catalog today that has the 10x12 one for $549.99! They do take a lot of work to make them sturdier so they hold up to wind, etc, but it seems like a way to have a pretty good sized greenhouse on the cheap. I have a purchased Growing Dome that I'm using for both tropical plants and cacti and succulents. If I get one of these I could just do the cacti and succulents in it.