I bought it (2 of them, actually) on e-bay -- if you search e-bay for "greenhouse" a whole bunch of these come up now, and they are cheaper than what I paid (which I thought was very reasonable, $129 with free shipping) as well! They also now apparently have a "powder-coated" steel frame to resist rust, which mine don't have. I believe I might have to get another one...
We had originally planned to construct one out of PVC pipe and plastic, but I'm pretty sure these look a lot nicer that whatever we would have come up with, are probably sturdier, and have the nice zipper doors and even screened windows. The covering has a mesh embedded into the plastic and is UV protected, so pretty sturdy. I also have a greenhouse for my seedlings, my main purpose for these was to be able to actually plant stuff in the ground and have it protected from the weather. I wish I had a huge one over the whole garden, LOL !
