Osprey Publishing having a holiday sale

Osprey Publishing is having themselves a 24hr holiday sale over in their webshop on all their books.

Source

From the announcement:

In under a month we will be inundated with shredded wrapping paper as shoals of us are swept up in a gift-giving frenzy.

In order to mitigate some of the stress, at Osprey we have decided to provide a little bit extra on Black Friday – 25% off all books and ebooks.