Couldn't agree more with comments about cheap chicken coops on ebay being rubbish.
A friend bought one last year (against my advice I must add!) and after last winter it has just fallen apart.
I bought one 6 years ago from
http://www.moorlandspoultry.co.uk locally and although it was quite pricey, it's still going strong despite our severe winters up here in the Peak District.
You definitely get what you pay for...