The catering industry is more developed than other industries, with fierce competition, relatively cheap and high other consumption. The prices of circulating products sold in supermarkets are very low. Master Kong mineral water sells for 80 cents, and Master Kong green tea sells in 2.2 yuan everywhere. It depends on what you bought. People in seven towns usually buy big items in Dunhuang.
Most people in the seven towns are from Qinghai Oilfield, and their salaries are high (the salaries of people I know in Qinghai Oilfield are around 4,000, which is considered a high salary in the northwest).