General Motors has cut the price of adding XM Satellite Radio to most of its vehicles to $199 for the 2007 model year, down from $325. The first three months of service still are included in the price; after that, it's $12.95 a month.
The two exceptions: Hummer isn't cutting prices, and XM is standard on all Cadillacs.
There's a revenue incentive for GM to get more XM radios on the road. According to XM's 10-K filing with the U.S. Securities and Exchange Commission, GM gets a share of the subscriber fees paid by GM owners. XM also reimburses GM for the costs of OnStar call center workers who handle XM service issues.