Question for a champion

"Seventh Continent" is very active in the field of promotion. Every month you can find a leaflet at the check out promoting several products with 10% price reduction ("Шок цена")... if you have got the VIP discount card. And in September, if you bought minimum for 2000 roubles of products, you could get from 5% to 14,5 % discount on your next bill...14,5% only with Seventh Continent discount card... Is everything clear?
Question for a champion: what will be your benefit at the end of the month?

L.K.