Here is a short comment: it's impossible for a whole group to study with Xeroxed textbooks. Published books are much handier. Also a teacher wouldn't use a Xeroxed book for many years - sooner or later he (she) will buy a printed one. If he (she) doesn't - this means the book isn't needed often. Why then force people to buy books they don't really need? I believe educational literature publishing houses should have full complimentary copies of textbooks online for free use - and it would only help the sales.

Every year I buy  from 10 to several dozens of Cambridge for Schools for my students (often in Eurobook). Nevertheless I often need copied materials of the same books:

- the first units in September not to wait for everybody's money to be collected

- some units from WB because it's difficult to get the British version here. Russian WB is ugly.

- some units for those who join a group later and are buying the textbooks by themselves

- some pages to do extra exercises with them (clip them in parts, erase text pieces to be filled in, etc)

- some exercises to be redone.