Dynamic repricing is a strategy that continuously adjusts product prices to respond to supply and demand in real time. The price of a product can change in a matter of minutes, with the goal of price optimisation.
Amazon, for example, relies heavily on this strategy. If you look through their website, you will notice that their product prices are updated every 10 minutes. This allows Amazon to offer the best bargains as they can discount products as they become popular or receive good reviews.