Satellite Radio - No Signal

My satellite radio has had good reception since I bought the car new in 2012, but recently has been showing “No Signal” and does not play (all other radio sources/functions work fine on the radio, the subscription is active, and satellite radio reception is otherwise good in my location). I have tried refreshing the signal several times to no avail. Sirius says to take the car to the dealer for a $136 diagnostic test. Before I do that I’d like to ask if anyone else has experienced this problem and what they did about it. I’ve thought about replacing the 7” screw-in mast, but want to know if there are quality options available in lieu of the $45 OEM replacement part from Toyota.