Churros are supposed to be cheap street snacks. However, Churreria seemed to put this simple thing into a higher level. You can have basic churros -which is perfect to me- or rather "sophisticated" with ice cream, berries, bananas.. Well I think they're complicated and would just ruin the real taste.
The simplest package will cost you Rp.28.000,- (add the tax etc.) for 4 bars of churros sprinkled with cinnamon and sugar or icing sugar, and a dip of chocolate. This counter in Grand Indonesia (West mall, UG level) is quite full on the weekends. Alternatively, order the churros for take-away meal and enjoy it by sitting on the benches around the mall. Not much differences, and it saves you the tip.