Chicago Electrical Code

I'm considering doing some electrical work on my new place. I live in the Chicagoland area and I know parts of the area used to require all electrical work be in metal conduit. I'm not sure if that's the case anymore but I have come to find out that a copy of the electrical code is available for $145 in print and $155 for PDF! Come on! This is a law and I should not be charged for viewing it.