I realise “cheap” is in the eye of the beholder, but a new kindle is £95 today and is probably one of the best bang for buck spends for hours spent. I’m using my wife’s kindle from 2013 and other than a decade of cosmetic damage it works just as well as it did on release.

At a certain point them being “cheap” makes them disposable not accessible. If you can afford a few new books a year you can afford a new kindle. If you can’t, they are readily available for about 90 minutes of minimum wage work on eBay.