Check out Bob's weekly column in this Sunday's Chicago Tribune (already available online), where he breaks the news of actor Vince Vaughn cutting the rental price on a Chicago town home that Vince owns from $7,800 a month to $6,900 a month. Vaughn's main residence in Chicago continues to be his duplex penthouse in Chicago's Palmolive building, which he bought in 2006 for $12 million.

Also featured: Chicago radio personality Brian Paruch listing a house he owns in Arlington Heights, Ill. for $594,900, and a 22-room, 16,000-square-foot mansion in Oak Brook, Ill. that former Chicago Blackhawks star and current Atlanta Thrashers defenseman Chris Chelios built in 1999 and sold in 2005 for $4.5 million. It's back on the market for $6.9 million.