I heard from several folks in the UK/AUS that their Kindle Slaying It preorders were cancelled, and Amazon was saying the book was no longer available.
First, thank you so much for preordering!
Second, the explanation: It turns out the Slaying It purchase link originally up at Amazon UK was actually for the US version of the ebook. But Gollancz will be publishing SI in the UK/AUS, so the US version isn’t purchaseable there. (It’s a book territory licensing thing.)
There was a gap between the US link being ready and the Gollancz purchase being finalized, which is why you were able to “preorder” the US version.
If your order was cancelled, you’ll need to order anew once the link to the UK edition pops up. Gollancz should be posting its own SI purchase link very soon!
My sincere apologies for the hassle!!!