What should I pay attention to when buying and selling second-hand houses in Wuxi Five-meter Sunshine?

A point of tax transfer price. The deed tax depends on how big the house is. If it is less than 90 square meters, it is a point of the transfer price. More than 90 and less than 144 is 1.5, and more than 144 is 3. The house has a business tax of 5.6 in less than five years, and the remaining small tax is around 1000. There is also the agency fee. I don't know how the intermediary there charges.