One: make money by this.
Although the cost of selling cold noodles is very low, flour, eggs, lettuce and sauce don't cost much, but I earn money by this, which requires manual fees and is usually very hard. Every cold noodle needs to be cooked by myself, so I only need one yuan, but I will make a fortune by selling cold noodles for five yuan. So it must be more expensive.
Two: rent, utilities, gas and other issues.
Some vendors selling these snacks only need a cart, but it's hard. However, some people may rent a facade room, selling not only roasted cold noodles, but also rice rolls, spike potatoes and other snacks. Although the cost is relatively low, the rent, water and electricity are very expensive. In order to survive and make a little profit, we can only say that the cost of rent, water and electricity is spread into the selling price.
Three: the price rises.
If we often buy things, we may find that the same things we have been buying will increase by one yuan or several dollars after a while, because it is not easy for vendors, because there are many reasons for the price increase, and vendors also need to buy ingredients for baking cold noodles. In the case of rising prices, the price of roasted cold noodles is naturally expensive.
In short, no matter what business you do, it's all about making money. It is not easy for people to buy things, let alone sell cold noodles. It is good for everyone to understand each other.