They can install to more than one TV but that comes as an extra cost. It's impossible to say how much more since they all have different rates.
Basically, you're going to have to cover the cost of the extra cable (distance 'from one room to the other', plus the 'distance from the ground to the ceiling x 2') and any extra labour fees. Shouldn't be more than a few hundred at most.
Basically, you're going to have to cover the cost of the extra cable (distance 'from one room to the other', plus the 'distance from the ground to the ceiling x 2') and any extra labour fees. Shouldn't be more than a few hundred at most.