SiriusXM Satellite Radio offers a 3-month Streaming Service Trial for free. That's a savings of about $42 per month and the best offer we've seen from Sirius. (The previous best was a 2-month trial last July.) Deal includes every channel Sirius offers including premium channels, along with online and app streaming. Some exclusions may apply. Be sure to cancel the trial before the three months are up to avoid billed for further months.