I tried Craigslist for awhile but the folks that were selling wanted way more than I thought they were worth.Have you looked on Craigslist? Obviously anything used you would want to clean and sterilize. I turned my 16x10 shed into a coop. I fenced off the back 10ft section to make a 10x10 coop and gave me a 6x10 section for storage. The eBay link looks nice. What about using wooden dog houses for a coop? I know an 8x8 shed kit from Lowes costs about $600, but of course you would have to it it together. Another option that I am considering this year is a hoop coop. If you do a search on here it will bring up quite a few pictures and how to's. doesn't look too hard.
There was a road widening going on in our area and we noticed that about 5 of the houses slated for tear-down had garden sheds in the back yard. Through the road dept., we found out that the houses would eventually be turned over to Habit for Humanity Re-Store for gleaning so we contacted them. Got the shed for $250 and we had a friend that got it on a trailer and moved it to our property.
Then...I had a plan. here's a few photos of the inside work:
This was the first phase...All materials used were items my husband already had (he's a saver and re-purposer) with the exception of the vinyl on the floor and the hardware cloth. I use deep litter over that vinyl. I painted everything because I wanted it to be easy to clean and not have stuff seeping into the wood.
In the second phase, added more area for the chickens but it was also set so that it could be totally shut off from the other side for brooding. It stays open when no brooding is going on so they have the whole area. There is still a walk-in "people area" with a shelf for storage and enough room to have the food can, rakes, etc.
Broody is currently using that side!