I pay for my XM service every 6 months. It is on auto pay on my credit card.
I just looked at the bill and there is a $2. invoice fee? WTF? They charge me $2. to send me an invoice and it is on auto pay. I can't think of any other vendor that charges an invoice fee.

 

That is BS. To even charge an invoice fee if they have to send you one is ridiculous, too. Let's see - 20 million subscribers @ $4/yr invoice fee = $80MM. Yikes. Worse than BofA wanting to charge $5 for Debit card.