Value is a subjective/objective factor that cannot be erased or replaced by market price evaluation...
It is a personal motivated complex choice to buy a vintage piece....
My own choice is explained above about my Sansui decision...
But someone else could want to pay 2000 bucks for my Sansui for complete other reasons than mine and for his specific needs...
For example there exist on the contemporary market of new product no amplifier at any price with the possible flexibility choices associated with the Sansui AU 7700..
Then somebody with other needs than mine can claim that 2000 bucks is not a too much high price to afford a piece of gear so useful in flexibility of use....
Anyway no other contemporary amplifier at any price is comparable with the great number of his features and possibilities ... NONE...
Then value is not price market...
Value is a more stable factor than price market which fluctuate around offers and demands relation...
Collectibles are a good example of great values with sometimes low resale possibilities...

