That actually sounds quite reasonable. You are talking about mounting, wire-dressing, configuring and programming control of 7 TVs. If there are all part of a central video system then they could have 5-8 cables behind them, all of which have to be terminated and tested. The TVs then have to be mounted and wire-dressed for a new appearance. If the TVs are all smart TVs then every single one of them has to be connected to the internet, download and install updated firmware, download and install all smart TV channels and setup and configure each one. Then they have to perform video calibration on each TV. For the surround sound systems, they have to terminate and connect between 6 and 13 wires per location to the AVR. They then have to setup and configure the AVR for both audio and video playback. They have have to program whatever control system it is they are using to control it. Then they have to perform an audio calibration of the system to ensure optimal performance. If there is a central rack location, they have to spend a couple of days wire-dressing the system and testing each and every wire to make sure it functions properly. They then have to integrate with all the other system you are connecting in the home. They then have to do the work for the other subcontractors who know how to install their own system but don't know how to connect it to the internet, the app or any other component of the system that would allow it to talk to your control system. Then they have to meet with the Spectrum/ATT guy to tell them where to plug in their Internet/TV phone service as they are scared to death of the mass array of wiring and equipment and get paid a fixed amount per activation. There is a lot to it that you are not aware of. For our clients we tend to not let them know about all the minutia unless they really want to as it is a bit "eye-glazing" for most.