MTS Jeans-Open: The attraction of unprecedented generosity?

MTS Jeans-Open: The attraction of unprecedented generosity? C 5 to October 18, MTS offers its subscribers use prepaid-unlimited incoming calls for quite a ridiculous fee of $ 1.69 ($ 1.9942 from VAT). The proposal is decorated in a temporary action (as usually done in "Jeans"), serving until November 30 inclusive. This action caused a lot of issues, including the two main ones: whether "it works and why it was done?