I tend to agree with oldhenlikesdogs. I built both my coops and runs. with the exception of the older run I can stand up in both the coops and the newer run. But then again I have 41 birds in there. Mostly Chickens, but there are a couple of turkeys too, and the Tom certainly takes up a little acreage. I would strongly encourage you to build you're coop if you can. If you can't you may not be able to find something perfab that will really work well. I suppose another option would be to higher a handyman.
I will say this. I won a pre-fab coop from my local farmers co-op, it sells for almost $500, and I guess you could keep one or two hens in it, but like oldhen, said, there is no real air flow, and it's tiny. And mine came factory equipped with leaky roof (now fixed). Now what I do use it for is brood pen. Somewhere to separate a mama hen and her newly hatched babies. This it seems to work well for that as babies don't get out and since there isn't a lot of space mama doesn't loose track of them, but I wouldn't consider keeping birds full time in ours at least.
