This is a supermarket, and most of them use 9, such as 0.9 yuan, 9 yuan and 99 yuan. ...

This has two advantages.

First: For example, the goods imported from 40 yuan could have bought 100 yuan, but after 100 yuan, it became three figures, but 99 yuan also made a lot of money. Consumers can't say 100 yuan at first sight, but most of them know it is almost the same when they check out.

Second, today's consumers love face, and sometimes they don't even leave change. Although it is not good, it is still a lot.