just wondering what the reasons are so i can get a better perspective
I had exactly the same curiosity, and also a handed-down Garrard 301. I was astonished at how much these seem to fetch, and had not really been into vinyl since CDs came out - I mainly listen to classical music.
Helpful posts from @lewm and upgradeitis set in. Several thousand dollars later I had a system that played vinyl at a level of enjoyment roughly equivalent to CDs.
Then I went to a speaker demonstration where the source was a Holbo tangential air-bearing system. So now I have two turntables and no money, but sound that might surpass SACD quality in enjoyment!

