I bought a 100" TV with setup and it was only $1600. I don't know how they make money on that with all the logistics required. Two people for delivery, two different people for the wall hanging, all the materials for the packaging, and that is just to get it to my house.
I suspect the domestic costs are really dependent on volume (like, can you ship a container of 45 TVs to a warehouse near NYC or do you have to ship each unit individually) and I don't feel confident estimating that side of it.
You can buy a $5k TV and its startup time, auto-play adware at the Home Screen, constant OS popup notification BS, etc are almost universal.
You can't buy your way out of scammy experiences anymore because the market has figured out the people most able to afford buying their way out of it are the highest value ad/scam targets.