Camping World installed cost was around $1500. They did have to remove the cabinet front to fit it in, but the trim covers everything nicely when done. We did go with the vented option, which required a big hole to be drilled. We dropped our rig off in the morning and picked it up at the end of the day. Do make sure that they test everything and cycle the unit before you take it away.
We have been very happy. Please note that Camping World can be a risky option. Sometimes you get a great Tech, and sometimes you get someone who is learning on your dime. I did notice that they left their stock of extra screws on my bedroom counter, and also an empty box that the vent cover went in.
We chose the chrome look vent cover, not because of the finish, but because of feedback that the white version hums loudly while going down the road.
The first time we did a load of wash, we thought there was an earthquake