If you look at Kingsnake you will find there are a few breeders up near you.
Also there is a big BP breeder in ****eyville WI, SWWreptiles
SouthWest WI reptiles, He might be able to cut you a great deal and may be able to meet you since he does IA shows too.
There are snakes available out there.
I did a quick search of your local Craigslist
and found these
http://rmn.craigslist.org/search/pet?query=snake
Here is a breeder/seller in MN
http://www.twincitiesreptiles.net/

and you can see if a breeder or seller uses
shipyourreptiles.com
hope this helps