I still don't want to pay.
I'd only use it for listening to the games. I don't know anything about sirius -- is it a digital thing where you can pause and rewind, or is it just radio? Does it do anything that an internet broadcast doesn't?
Certain units (Stiletto) have "tivo-like" timeshifting functionality and a few GB to record favorites. As for content, there are the commercial-free music channels, and a variety of news/sports/comedy/talk radio options. (
Channel list here.) Sirius exclusives include Howard Stern, NFL radio broadcasts (home and away) for every game, a bunch of college sports teams, NBA games, and Nascar, if you're a redneck.
Really, the key benefit over internet broadcast would be mobility, assuming you have a unit that isn't built into your car. That is probably a bigger deal to people with actual commutes than it is to college students or small town residents.
Sirius has internet radio for $2.99 per month but I don't know if it includes sports.
If you are a subscriber with a radio, the standard internet stream is free. The $2.99 is for a CD-quality stream. If you have no radio, they're going to charge you $12.99/mo. for the quality stream.
Here is the list of internet-streamed channels.
kono