The Quad-City Times and St. Louis Post-Dispatch are both available for Amazon's Kindle.
The Quad-City Times is $5.99 per month. It is No. 9 (out of nine) on the midwest best-seller list. The Post-Dispatch is $6.99 per month. It is No. 6 on the same best-seller list.
The Chicago Tribune at $9.99 a month is the most popular.