1, Flour: A catty of fried dough sticks needs about 400g of flour. At present, the price of flour on the market is about 2 yuan/catty, so the cost of flour is about 0.8 yuan.

2. Oil: The oil consumption of a kilo of fried dough sticks is about 2 yuan, and the specific oil consumption may be different due to the size and frying method of fried dough sticks.

3. Auxiliary materials: The cost of auxiliary materials such as yeast powder and soda water is relatively low, generally around 0. 1 yuan.

4. To sum up, the cost of a kilo of fried dough sticks is about 1. 1 yuan, and the market price of a fried dough stick is 3 yuan to 4 yuan.