The first time I invested several thousand yuan to buy an electronic menu, I thought it was not worth the price. But in fact, the cost of a paper menu is not low. Generally, it costs thousands of dollars in 500 yuan. Because the dishes are updated, the menu will be updated every two or three months. The life of a paper menu is as long as one year, and the annual cost is about 10 thousand yuan. If you think the electronic menu is expensive, you can go to some online electronic stores, and the price may be cheaper than that on the market.