I did the Sirius XM Radio offer just now. For those with AMEX cards, there is an offer out that you may have for 30% back on specific streaming services, up to $15. It includes "purchases made directly on US websites with Sirius XM Radio Inc. (including both internet-based and satellite-based), Pandora, Spotify, Sling TV, CBS All Access and Showtime."
If all goes well, my 6mths of Sirius came to $35.66... I should get 5000sb on DHs account, 500sb on mine for the referral bonus, and $10.70 back on my charge from AMEX. I don't have anything else on the streaming services list for the AMEX offer, so I may do it on my account too and use the last of the AMEX offer. That would be another $35.66... 5000sb, $4.30 AMEX offer. Total $71.32 minus $15 AMEX = $56.32 OOP for 10500 sb plus 6mths Sirius radio. They already call us anyways because we had free trials with our vehicles before...