The prices of popular grocery items can vary from store to store and over time. For specific items, you can research online to find out the prices that various stores have been charging for those items in recent years. Generally speaking, however, overall grocery prices have increased in most areas over the past decade, according to the US Bureau of Labor Statistics Consumer Price Index (CPI). The CPI is a measure of the average change over time in the prices paid by consumers for a basket of goods and services, which includes grocery items. From October 2010 to October 2020, the CPI for food and beverages (which includes groceries) rose 13.2 percent.