Serial readers of the Tech Answers blog probably know that I would recommend either an iPad Mini or a Google Nexus 7 for an eReader tablet and that, though they are very pretty (the devices, not the blog readers, who could be pretty, but I wouldn’t know), I would guide most away from retailer-specific hardware like the Kindle Fire or the Barnes & Noble Nook. But that overlooks one very important buying category: Cheap Tablets. These are sub-$150 and often sub-$100 devices that you’ll find at convenience and drug stores.