By the way, why is "Doshiraki" considered almost the cheapest food? = = )
Pack of the most common rollon, if the memory does not change, 65g. In my city it costs 12-14 rubles depending on the store. Let it be 12 (at a minimum).
1 kg of rollon gets about 180 rubles.
Expensive vermischel for saved 10-15 minutes for cooking.