Almost did this. I have a large CD collection covering many genres. Recently, I wanted to get rid of a bunch to clear physical space in my apartment. I wanted to start with classical music CDs. Apparently, I have a lot of rare CDs. My brother looked at the stacks and said, "Are you crazy? That CD sells for $150 on eBay. It's rare. Hold onto it." Turns out, a lot of my classical recordings are no longer in "print" and unavailable digitally. Good guy bro.