Update

My book has appeared on a number of online bookstores from the United Kingdom! Unfortunately, B&N and Amazon.com are a bit slower; those 2 sites have only placeholder pages up saying the book is "not available at this time". Strangely, amazon.co.uk has it available, whereas amazon.com doesn't.

Anyways, I'll post links here to some of the bigger name bookstores once they're up with availability for buying (hopefully in the next week or two), and a link to a search engine to get the smaller stores.