Forbes just published a special report with updated values, revenue and operating income for all 30 major league teams. The Cards are # 8 in value, 10th in revenue and 24th in operating income, which would tend to say DeWallet has been open.

There is a good chart for comparisons and sorting on various data points.
http://www.forbes.com/lists/2009/33/baseball-values-09_The-Business-Of-Baseball_MetroArea.html

The Marlins are cleaning up, with operating income of $43.7 mm on revenue of $139 mm