I build my desktops, so I have no experience with them. I didn’t have a great experience with Alienware when I got my refurb laptop but… .it’s still kicking just fine. They’re pretty popular on the deal sites too,especially the refurbs. If you dig deeper, you can usually find out with motherboard, the exact one, they are putting in them. I do recall it took some digging in the support section to find it though.
1600 is a reasonable price. 2300, not a chance. There is nothing in your configuration that should make that system you listed anywhere close to 2k, no matter who is building it. Th eonly real premium thing you have going on in there is that R6 case, great case I have it!, and the 970 but even the 970 is the 500GB not their beast 1TB.