The average tea shop earns about100000 a year. Generally, the sales price of milk tea in medium-sized cities is still on the high side, and the per capita purchase price of customers is calculated by 10 yuan. If the average number of customers received per day is 80, then the daily turnover is 800 yuan. Generally speaking, a tea shop has more than 80 customers, so this 800 is estimated according to the minimum conservative amount. First of all, you need to deduct the rent from the tea shop. Generally, the area of tea shops is very small, so the monthly rent will not be too high. The monthly rent is 4,000 yuan, and the daily rent is 133 yuan. The daily water and electricity consumption is around 50 yuan, and the employee's salary is 3,500 yuan, and the average daily salary is about 1 17 yuan. Therefore, after the basic expenses are removed, the daily income is turnover-rent-water and electricity wages, and the obtained data is 800-133-50-117 = 440 yuan, which can basically be opened for 28 days in 30 days a month, so the basic income in a month is 12320 yuan. The profit margin of a cup of milk tea is close to 80%. If the quantity is 75%, the monthly income is 9240. On average, the store can be opened 1 1 month in one year, so the net profit for one year is about 10640 yuan, which is about100000 yuan.