Amazon wants to sell your Kindle’s physical buttons back to you for $35

Amazon has new Kindles. The company says it redesigned the lineup from the ground up. I look at them and see, well, Kindles. What new can you do with a slab of digital ink? Not much. Still, they made the front completely flat, with no seams, like a phone. And some of them come wrapped all around in colors with names like ube, alpine sky, seaglass green. Like all recent Kindles, the new versions have no physical buttons. But it seems some people miss the ability to click to a new page be...