The biggest is listed for 10 chicks. Price is good and they offer free shipping. For what you are wanting to spend you could actually buy a couple of them to accommodate all your chicks.
I tried emailing the guy with a frame coops but no answer yet I am emailed the Binghamton one to hear back on prices and where exactly located. I saw the chicken saloon but to small. I also went to talk to this guy about this coup he said it would run about $1680 for one with metal roof and ceiling instalation is that alot? That's pick up shipping extra $200. http://poconos.craigslist.org/grq/3554588628.html