Almost none of my kit is UNDER ten years old.
My Audio Research SP10 is iconic and 1983. Only re-valved.
My Krell KRS200 References are from 1985. Fully rebuilt once, mostly just new capacitors.
Both coming for 40 years old.
I am still getting great sound from both. Truthfully there has not been much advance in amplifier design since the 1980s, whatever today's designers try to tell you. This is mature tech.
And they've long since paid off what I laid down for them. Indeed, they're now worth more than I paid. So, free high-end listening from top-ranking vintage amps by top designers who were honest then.
Don't listen to posts saying 'buy young'.
My Simon Yorke S10 with Aeroarm is 2008 and still state of the art. It will run forever. I just add a few drops of oil to the bearing once a year. Simon's previous S7 was Fremer's reference for 8 years. My Aeroarm is one of only five customer pieces and a huge improvement on the pivoted S7 arm Fremer had - that he changed for a Graham, I recall.
Don't buy the current spew of blingy, trophy chrome-plated turntables. Buy properly thought out engineering at a tenth of the price. Nothing wrong with vintage Garrards, Thorens etc either.
And @rird... If you ask a dealer about old equipment, what's he going to make out of it ?? He wants to sell you new stuff, at the biggest bucks he can persuade you to shell out.