Video gold in shopping malls sells for 430, and those who receive gold receive 425. What he earns is the price difference and the consumption of other jewelry in the mall. Video gold in shopping malls is sold in 430 yuan, and those who receive gold receive 425 yuan. If 430 yuan subtracts 425, you can earn the difference in 5 yuan. This is small profits but quick turnover. After people are attracted, you can see other exquisite jewelry in the shopping mall, which can increase sales again. So the video gold in the mall sells for 430, and the gold receives 425. What he earns is the price difference and the consumption of other jewelry in the mall.