The resale value is just a reflection of market demand.
Clubs don't routinely install Vestax, so the demand isn't as high as Technics.
I don't know an audio device that keeps its value quite as well as a Technics record deck. It's remarkable.
If you're looking for a babysitter, I keep meaning to learn how to mix on 3 decks.
I'll have to ask the Mrs though - recall our previous discussion on storage space: I'm probably on thin ice already, insisting on a corner of the living room for decks and records.