Is there a service for cooperation and purchase of IT products?

Question

Computer networks

Interested in whether there are Services that allow people with common interests to chip in and purchase a product that everyone needs?
Maybe it's not entirely legal. Let's say a pdf book is sold for $40, 2016, 5 people chipped in and got the same book for $8.
The same can be done with accounts for training. Thanks in advance for the Answers.
PS looking for book Refactoring to Collections

Answer 1

completely illegal

Answer 2

Yes, such services are called "skladchina", google for this word is good.
Content from these people often appears on torrents, especially the lyndacom translation