Current subscribers can get over half off on their Sirius XM Radio subscription and not needing to use a promo code. After taxes you are looking at about $35 total for a five month contract. Many received a quote of $89 annually.
This Youtube video documents the steps as a live case study on how this can be accomplished:
First you will need to contact them by phone at 1-888-601-6302. Explain that you would like to cancel your Sirius subscription since it is too expensive. You can blame your spouse, interest in cutting costs, or whatever excuse you would like 😉
If the customer service representative still doesn’t offer up the goods, tell them you will think it over and call back. You can always call right back and speak to someone else and follow these steps again.