Since January, 25 2015 on January, 31 2015 all clients have an opportunity to get two things at the price of one.
At purchase of 2 things, you pay only for 1 the most expensive, at purchase 4, only for 2 of the most expensive, etc.
*** The given action(share) is not distributed to individual orders.
*** Given discounts are not summarized with other actions(shares) and offers.