Pennies for CDs

We have hundreds of CDs and only one old Mac left that could even play them. Between Apple Music, Spotify, XM Radio and Amazon Prime Music we are over supplied with music.

And I wonder if our CDs are oxidizing (rusting?) as they sit there. Are the bits and notes eroding?

Testing the barcode scan selling cart on www.decluttr.com. They are almost worthless.

My selling cart: