Sirius XM seems to be cheaper if you buy it directly from them : r/tmobile
Just A Car Guy: Sirius XM is desperate for your business... the normal 16 a month? Not even being talked about. Right now they need to make the end of the month,
Shop SiriusXM Radio receivers and bundles – Page 3
SiriusXM 6-Month Subscription ONLY $30 or 12-Months for $60 (New Customers)
SiriusXM Satellite Radio Aftermarket In-Dash Receiver-Subscription Sold Separate