I've been playing this game with them every year, but I always chisel them for a little bit more. If you tell them the service is a luxury, you can save money by streaming Pandora or Spotify, and that you will only renew if your price out the door is $X ($150 in my case), they get the point. My billing ends up like this:
119.99 All Access
23.94 Sirius Traffic
16.66 Music Royalty Fees
7.34 Tax
-20.06 Manual Credit (Manager must Apply)
Total = $147.87
Once you've done it a few times, they can see the history - It usually takes no more than 15 minutes on the phone, but the regular price for this combo is over $320/year.