In my experience they did not charge me any installation fee or outlet fee. In all occasions, the number of outlets on my account was increased by one. I purchased one terminal from Futureshop, the other was a used one through craigslist and on both occasions, I just phoned in the serial number and they activated without any additional fees. Maybe I was just lucky.There is a 2.99 monthly charge for a 2nd outlet, plus the cost of the box, plus potentially a 70$ install fee. Even if you tell them you will install it yourself, you may get charged 35$ if you only have one outlet listed on your account already.