Sounds like something to bring up with the publisher (either Dark Horse directly or their parent, Penguin Random House). They're the ones who set what's available in what countries. From the US the books you're interesting in are listed everywhere I checked Amazon, Kobo, Google, B&N, ComiXology, but at Kobo some are listed as pre-orders. I'm thinking someone at Penguin must have messed up when listing them on Kobo and set things wrong.
|