i didnt buy the Marantz stuff, just seemed like good deals for a in-store open box. unfortunately Crutchfield is getting rid of it's outlet section in the store (they have 2 stores and one of them is here). Online returns end up in the outlet section, and as you can imagine, high-end stuff will languish there for years in my town. Which is why the prices can be quite low.
they had HiFiMAN HE-500 on display (the headphones are right in the front of the store), quite a few sennheiser models, and a Grado SR-125 or 225. and of course, Beats.
as for the LG 84" 4K TV -- i believe it is about $15,000. in a few years all TVs will be 4K except the entry level and so i'd expect a price of around 3k. but realistically maybe in 5 years not 2 years.