On any given Saturday you can find about any breed. The fancy and rare breeds are not as common but they are available sometime. If you are looking for a specific breed I would advise seeking a BYC member to buy from. The experience of going is enjoyable because there is more to see and buy other than livestock.
I love Collinsville flea market and have been itching to go back, hubby keeps my car so much that I haven't any way to go these days! I want to go to see and buy the chickie's and whatever else suits my fancy
You are about 5-6 hours away. You could always come up on Friday , spend the night and go back home late Saturday. It is a nice ride if you come the scenic route.