Dynamic pricing is the practice of changing the price of a good or service to reflect changing market conditions, such as setting a higher price at a time of higher demand, and vice versa. Supermarkets, gas stations, electric companies, airlines, hotels, cab services, and many other businesses vary their prices.Often pricing is done by people or algorithms based on simple rules. We will consider how this can be done with ML, what data, algorithms, and approaches are needed. We will discuss the challenges that are likely to be encountered and how to test the solution in a real-world setting.