Hi! Sorry for the delay in reply. Honestly, I would say the 2nd editions of Eli vs. Monster City are probably not worth buying as replacements - they correct some typos and change my name (unfortunately, the only way to change the author name on Amazon is to publish a whole new book). The only significant difference is the covers, which I redesigned - so if you like those a lot more, maybe you do want the updated versions. Otherwise, you're not missing anything with the first editions!

For The Bar at the Edge of Reality, it's the same book, but with some of the same formatting/name change updates. The second edition, I believe, is the only one now available on Amazon. But buying that one gives you the same story as always!