The physical book is now available on Amazon.com!
You can order the book from any place in the world. If you live in the states, the shipping cost is pretty low. However, if you live outside USA, it’s pretty high.
If you don’t want to pay these high shipping costs, you can wait for the book to be available on the Amazon UK (or Adlibris.se and Bokus.se), which will happen soon. At least then it will be far cheaper to buy it from Europe.