My CDs were once available via Amazon, but many of them no longer are. The reason is that my old distributor, CDBaby, stopped supporting physical releases. A side-effect is that digital availability through Amazon in particular has also been impacted, and most albums are not there. I just discovered this today and updated product links on this site.
If you want a physical CD, you can now get them from my own store at http://store.randyellefson.com. The change at CDBaby is one of the reasons I opened my store.
Digital distribution is still available at Apple Music, my store, and sometimes at Amazon, and you can always stream me at Spotify and other similar platforms.
That said, it is always more helpful to me if you buy directly from me, so please do! And thank you for your support!