Just discovered I somehow missed (at least) one book when I did my bulk download from Amazon. Now I'm even grumpier about that whole dang thing. And I'm definitely not buying any more books from them.
This is a good time to plug bookshop.org where you can buy many books #DRMfree, while supporting your #localbookshop with your purchases.
(And if you don't have a local shop to support, might I suggest Orca Books in #olympia https://bookshop.org/shop/orcabooks. It's a #cooperative which I think is neat!)
And a final tip: Don't forget to check if your favorite author sells direct.