Electronic IT-books at a free price on Books.ru

On the site Books.ru is an action " Electronic books at your price! ". Books are mainly IT directions. Quote from the site:

Three days, from December 30 to January 1, 2015, we offer about 1,250 e-books at a free price. This means that you can pay as much for the books as you like. We have increased the number of books compared to previous promotions, adding about 50 new books.

Link to the list of books - http://www.books.ru/aktsiya-2015-4021718/


You need to register, but after that you can set your price on any book from the list (minimum - 1 ruble). I want to note that at the beginning there are really new books, then old ones (which participated in previous similar promotions), then with rare patches again interesting and new ones - so be careful!