Many years ago when I lived in Boulder, on Pearl street was a huge used store. Most stuff was buy @ 25%, sell @ 50. Got a lot of stuff there. Some special stuff held it's price better. Luxman and Mac amps, Revox reel to reels.
Just about all stereo stuff has progressed in the last few years in quality and price. So be careful looking backwards through rose collared glasses. Also be aware that some equipment does age. Big electrolytics dry out and their ESR skyrockets. Pots and switches get dirty. Also be aware, about half of what one finds on E-bay has hidden defects.
It is worth respecting what running a brick and morter costs. If they can't make 50%, they can't keep the doors open. Middlemen not much better. That is why a lot of companies have gone direct sales. Thy take the middlemen cut, but save you the retail cut. IF you know what you want, win-win. Of course, some hold direct sales at the same price as their retail outlets to protect them. Otherwise it is like cars. You go to your local high-overhead dealer and cost them time test driving, then go online and buy from a volume seller.
I had a max for the amp of about 3K, but did not have to spend that. I am hoping the $700 for the Schitt is a safe move. If not, there are quite a few others. Atoll, Hegel, Denafritps, Anthem, ATI, Acrus, Aragon, Audiolab, Rotel, Outlaw, Soncoz and that is not touching the class D. ...