I'm with Cox in the Phoenix area. I installed 2 cable cards, on M-card in my TiVo HD, and one S-card in my Pioneer Plasma. Installation was a truck roll fee of $30 (or was it $35?) plus $15 per cable card. Cost for the cable cards is $2/mo. Cost for "digital gateway service" went up from the original $5 when I just had a digital cable box to $7. The extra $2 was because I had an "additional outlet" hooked up for digital service. Trying to argue that both the TiVo and the TV were connected to the same outlet (i.e. the same jack) not separate outlets got me nowhere. It's apparently more of a "per device" than "per outlet" charge. It is my understanding that if you have two cable cards in a single device, such as an original Series 3 TiVo, or the case of 2 S-cards in a TiVo HD, they don't charge the additional outlet fee. Fees in other markets vary widely, even with the same cable company.