The thing about buying old turntables now is that a lot of stuff ends up at garage sales where people haven't researched to find out if something that is old actually has value. So yes if you go to a marketplace that has good old equipment, you'll pay for it. But you can still get lucky and find the older pieces before the collectors find them.

I have two turntables, one that I bought 15 years ago to use in making cassette copies (LP to cassette on one multi-device system) and my Dad's old turntable.

SRS