As one of its daily deals, Best Buy via eBay offers the Sirius Stratus 7 Satellite Radio with PowerConnect Vehicle Kit for $14.99 with free shipping. That's tied with our mention from last April as the best deal we've seen. (It's also the lowest price now by $15.) It features ten station presets, traffic and weather reports, and push-button navigation. Deal ends today.
Note: Sirius subscriptions are sold separately.
With these companies, it might be easier than you think to negotiate your monthly bill down.