Called and spoke with a rep this evening. I was paying $89 a year plus royalties (about $102 total). The email from last year said my renewal price would be $170 total but the renewal email I received last month bumped it up to $202 or so.
I told him I enjoy having SiriusXM in my car, but between the amount of commercials and Top 40 playing on multiple stations nearly back to back, it was too much to justify paying when I have Spotify, TunedIn, Pandora, and IHeartRadio - all for free.
He pushed back a little, reminding me that the promotional rate couldn't be renewed. I had to reiterate myself politely saying the same thing twice and kindly mentioned I'd likely have to cancel if we couldn't work something out. He offered $99 royalties ($118) for a year.
Still more than I'd like to pay, but a $10 increase year over year seemed justifiable and I took it. Overall it was a pretty painless call. Really appreciated the fact that their system allows a call-back rather than sitting on hold for 15 minutes.