It's quite simple in my mind as I waited really long before I got one.
Generally well made servers sound as good, or better than your decent CD transport in playback.
And a good server should make no difference in playback quality if the file is pulled from streaming, or is a CD rip placed in the servers internal SSD, or it's from your NAS drive.
Once you find and hear a server brand like that (and there are a few that I have heard - Grimm Audio and SGM Taiko come to mind) then you will know why these servers are dearer.
I am sure there are lots of other streamers that do well too, that I may have not come across.
Generally well made servers sound as good, or better than your decent CD transport in playback.
And a good server should make no difference in playback quality if the file is pulled from streaming, or is a CD rip placed in the servers internal SSD, or it's from your NAS drive.
Once you find and hear a server brand like that (and there are a few that I have heard - Grimm Audio and SGM Taiko come to mind) then you will know why these servers are dearer.
I am sure there are lots of other streamers that do well too, that I may have not come across.