Do you really think the reviewer bought the review unit at 50% off retail? Mark-ups on some of these uber priced gear can be unbelievable. When I was importing Kondo gear (Audio Note Japan) and selling Ongaku amps they had a retail of $89,000. I sold them to customers for 24-26k depending on the value of the Yen and still made a profit! I bet the reviewer didn't pay more than 20k for the pre-amp.
$100,000 line stage
I know this level of product is not aimed at me. However, im sure it sounds great. The reviewer purchased the unit he reviewed.
https://www.dagogo.com/audio-note-m10-signature-preamplifier-review
https://www.dagogo.com/audio-note-m10-signature-preamplifier-review