If we combine the time spent with the aggregated sales, we can measure interesting metrics such as the purchase speed. This reveals how much money customers spend per minute during their visit to the store.
On special occasions, such as Holidays, the purchase speed increases, which means that shoppers spend more money, but usually spending the same amount of time in-store. For example, due to the COVID-19 situation, purchase speed in grocery stores increased 25% on average.