Mine arrived today. Haven't tried to put it up yet, but had a quick peek. It's basically a larger version of a Mini Greenhouse and with thicker tubing. The cover is the same as the heavier, reinforced MG cover, you know the green one with the squares? It'll certainly do for the price. I'd have been tempted anyway - even if just for the material to make spare covers for my other MGs!
I plan to put all my other MG shelving inside along with some Wilko's cheap staging to try starting some stuff over winter - there won't be enough hours in the day come Spring for all the seeds I've bought, though of course I'm not an addict as you know.
Not so worried about it blowing away as being carted off by some thieving barsteward. If it ain't nailed down... concreted in... electrified...etc