I agree, $10/month is just a bit to expensive. I just can't justify $120/year for radio, but then again somehow satellite radio still exists.
Everytime XM calls to re-activate my car, I lay it out for them. I tell them I don't feel their product is worth $150/year and that I feel a fair price for their product is $50 a year. They say they can't do that. But then days later I'll receive an XM deal in the mail to sign up for an introductory rate of $25 for six months. This brings me to $50 a year when I call to cancel during the sixth month as they usually give me the same offer for the next six months.
I just don't see more than $50 worth of value a year in some subscription by which I have little control over which songs and bands are being played.