As a real estate agent, I tell you that the normal profit is 10% ~ 20%. For example, the land price in Hangzhou is20,000. According to the market price, the construction cost is 5000 ~ 6000 yuan, and the three-year financial cost is 15%. It would be nice to buy 40,000 yuan, but its fixed cost is 29,000 yuan, and the price difference is 1 1000. Plus taxes, only after-tax profits.