I agree with you about those terrible coops. That one is the one that I dislike least. I had look at coop plans online, and like many of them. When I looked at the details, so many pieces of this and that......it filled up the full table. I did one time go to the hardware store to look at those items needed and I thought, this is a big job for me.I hate to see you buy ANY prefab coops. They all suck. The wood is very cheap in them. Have you looked thru the coops we have here? Some of them are simple to make and I bet you can do it. Nothing you cant do if you want it bad enough!
I still have not decide to buy it, but it is buy that or build those simple one, I keep telling myself that as the chickens I am getting a coop for are bantam so I am not building a massive coop. There are carpenters building chicken coops, but that is expensive for me.