sirious radio

I got a Sirius receiver in the Duster that my wife bought me for Christmas several years ago -10 yrs maybe. When I was activating it I was given the option to purchase a lifetime subscription for about $400.00. The stipulation was that the lifetime subscription was for that receiver unit only. If it ever died out so did the service. It is still working to this day (Do not use the car much) and I'll keep it active until the receiver dies.