Taken isn't the right word, but it does seem like the components are more than you need. You should ask them about the components in use and see how they match up to what you have and what you intend to do. They should be able to explain it.

On a 'modest' system with nothing more than mid-level volume on the sound, there are a number of A/V receivers which will do just fine.

In-wall labor for the wiring and such is typically one of the most significant portions of the bill. Places with lower labor rates often sell higher-end gear. So, you may want to check with another local provider who can put up some options.

A quality 100" fixed frame screen is typically $1,000 for top shelf quality.

A good mid-level A/V receiver is typically under $1,000.

It depends on what the entire setup is, and what speakers you are pairing to, if there are other rooms that are getting zoned off the main receiver, and what your quality and volume expectations are. The price may be fine for the components being suggested, but it sounds like more expensive components are being suggested.

Any chance you are in the DC area?

Sorry I am from the Chicago area, but the information was useful. The wiring is already installed from the pervious owner of the home, but will need to be updated, the wall speakers are already installed and there is a 3ft opening behind the wall for all equipment connections. Tomorrow I will be meeting with the company to revise their quote or I will find another company to do the work

Thanks