I just received this notice from the publisher:

Please find below the final Christmas order dates for direct site order through FeedARead. To assure delivery of your books before Christmas, please place orders no later than:

Paperback Books – Direct Site Order

In the US – December 10th
In the UK –  December 10th
In Australia – December 10th
In Europe –  December 7th

• Please note that books are processed for print on the print line first, and any orders placed after the noted cut-off dates above cannot be guaranteed for Christmas delivery.
• Please order early! Countries internal postage systems will have the largest workload on their infrastructures in the holiday season so please order early to avoid unexpected delays

We will be working up to Christmas, and all orders past the above dates will be processed as soon as possible by the printers.

Ordering books at booksellers
Final Christmas order dates for books at booksellers such as Amazon will be as listed on the various booksellers websites.

So if you are wanting to order a paperback copy for someone for Christmas, please do so by the above dates. Of course this doesn’t apply to buying the Kindle ebook version, or to customers in the Czech Republic ordering copies direct from the author.