Shed - Coop

Hi guys

Where is the cheapest place to by a new coop from.  I would need to house about 20 birds.  and also I prefer the shed type ones with the next boxes on the sides as I already have an enclosure

its cheaper to buy a 10x6 garden shed and build nest boxes , perches and shelving yourself , you can buy a shed this size for about £300 if you look around a chicken coop around that size would be well over a £1000 on the websites that i have looked on .
remember if you buy a shed put chicken wire on the underside and around the bottom to stop the rats nibbling their way in .