Ever price a sailboat? Tens of thousands is still entry level. The modifications done to cars run just as much if you do most of the work yourself.

A decent vintage turntable, e.g. Dual CS 505-3, costs about 300 Euros, add 100 for a new stylus and 200 for a phono preamp and you're ready to go.

I’ve found it’s really a spend what you want hobby. I’ve got a turntable and powered speakers and it sounds great. You can build a setup with more features or more vintage equipment but that’s not actually necessary to enjoy it. And certainly not as a barrier to entry.