What's the price of decoration painters in Shanghai?

The painter's calculation method, the coefficient used in this calculation method (that is, multiplying by 2.5), is not too large, and this calculation method is still acceptable. Here is a question, that is, how did you negotiate the price at the beginning (before the construction began)? If this calculation method was agreed at the beginning, then it should be settled in this way now; If you didn't make it clear at the beginning, what you need to calculate carefully from your own interests is: what is the actual area of your home that needs painter construction? If the actual construction area is more than the painter's calculation method, then forget it, because it is still beneficial to you. On the contrary, you can ask him to calculate according to the actual construction area. That is, the area of the wall, plus the area on the top surface. And this calculation method requires the painter to set a unit price, such as how much per square meter. This "how much per square meter" refers to the wall area plus the top area. Generally speaking, the price of wall coatings made by painters is about 2/_ yuan, and some will reach 25/_ yuan.