SiriusXM $30 with $50 Amazon Gift Card (make $20?)

http://bit.ly/2zrlMDf
Says limited to Devices, but terms do not indicate such limitation.
Offer Details: Activate a SiriusXM Streaming package by 12/31/2017 11:59 PM ET, pay $30 for your first 6 months, save 68% off the current monthly rate of $15.99, and receive a $50 Amazon.com Gift Card as our gift. Fees and taxes apply. An email address is required on this offer and will be shared with Amazon.com who will process our gift. Your SiriusXM Streaming service will automatically renew every month thereafter and you will be charged according to your chosen payment method at then-current rates. To cancel you must call us at 1-866-635-2349. See our Customer Agreement for complete terms at www.siriusxm.com. All fees and programming subject to change. This offer cannot be combined with any other. Customers who have active SiriusXM audio service cannot accept this offer. This offer may be terminated at any time. You should receive your Amazon.com Gift Card within 3-5 business days. Amazon.com Gift Cards are sold and delivered by ACI Gift Cards, LLC., an Amazon company. Restrictions apply, see amazon.com/gc-legal. Limit 3 subscriptions to SiriusXM Streaming on this offer per email address.