coffee planner

My friend is bugging me on drinking Starbucks coffee so she can get additional stickers for her planner card, or whatever you call that little red leaflet where the barista sticks well yes, the stickers after you avail their holiday or regular coffee... 17 stickers all in all, which likely cost a person to spend over two grand of pesos in order to fill that all.
Something that I can't really get. Oh well. Whatever, dear friend... get me a grande toffee nut - iced.