Years ago I had several Kindles for myself and my kids, made the mistake of trading them in, which was a huge rip-off. I should've sold them on ebay to get a better price, after hearing what @HarryT was able to get for his. Thanks Harry.
Now, all I have is a PW4--by far the best small reader I've ever had--and a Kobo Forma, the best premium reader I've ever laid hands on. And my usual menagerie of Android devices, which I seem to accumulate like my wife does antiques. :-)