I do have another option. If I buy books for college or for certification, my company will usually reimburse me. They have a high budget per employee each year for this. This year I have already got the company to buy me 6 books. I figure I might be reading these books past the end of the calendar year.
Still. I would like to also get these books. So I am going to wait until I am ready to take a mid-level Python certification exam. Then when I do, I will ask for those 5 interesting books to be purchased by the company. That should keep me busy well into 2022. The total cost for the print versions from Amazon is $135. That is even with Amazon's discount from the MSRP.