For the paper copy of the book, we are going to drop the price by over 50%, from today until December 31st. This means that the cost of the paper copy on Amazon.com is now less than US $20, and less than UK £15 on Amazon.co.uk. However this discounted price for the paper copy will be available on all Amazon stores worldwide. [Update] It looks like we can’t offer the promotion on the UK site immediately – the promo on Amazon.co.uk for the paper copy of the book will start on 20th January – sorry about that.
I’d also like to take this opportunity to wish all of my readers a very merry Christmas, and a prosperous 2020.