Amazon Warehouse – $0.59 Kindle Fabric Cover – Charcoal Black (10th Gen – 2019 release only—will not fit Kindle Paperwhite or Kindle Oasis).

I am not sure how many are left at this price, but there were definitely more than 20 each (there are three listings of "very good condition") at the time of this posting.
Enjoy!
https://www.amazon.com/dp/B07HJR5…B07HJR5CQ5