Great list. Before shopping for new, you might consider visiting a site like The Music Room. I was shopping for a new set of speakers with a budget of $10-15k. I found a pair of perfect (they appear unused) Focal Sopra No.2 black oak finish, in original boxes with all original materials for $12k. A new pair of these is $23k. The Music Room didn’t know how old they were but the boxes, that included each serial number, indicates they were manufactured in March 2021.
All I can say is I’m soo happy I looked at pre-owned speakers from a reputable outfit that does complete inspection, testing and provided comprehensive photos. I also purchased a Zesto Audio Andros PS1 phono stage for $1,800. It had worn 12AX7 tubes that I replaced for $300. It sounds incredible! New, it runs $5k+.
Just something to consider. Other than being a customer, I have no affiliation with The Music Room.
Matt

