What home improvement store or flooring supply is the most affordable for hardwood floors in Chicago?

I want hardwood floors, so I went to the 2 popular home improvement stores in Chicago (H.D and Lws). One had a very limited selection of hardwood floors and both were outrageous when it came to price. Is there any place in Chicago that is cheaper?

HOBO's has a big selection of flooring at a discount price. There is one in Crest Hill (near Joliet)