@kota1
Over the years I’ve gone to garage sales. At the last one, I scored just under 1100 CD’s for $150.00. I kept what I wanted and gave the rest to a friend. I told him to take what he wanted and pass the rest on. I have no idea what he kept, but a few weeks later I found a check in the mail for $100.00. I tried to give it back to him and he started to get mad! So I ended up filling in my collection with around 200 CD’s for $50.00.
Something else you can do is get disks from the library and rip them. I know someone who did that for years until they had nothing else left that he wanted.
All the best.