A Billion Prices

Once more I had cause to look at the Billion Prices project at MIT.   A way to calibrate prices generally and in real time by region?   Clever idea to syndicate this kind of data.  " ...The Billion Prices Project is an academic initiative that uses prices collected from hundreds of online retailers around the world on a daily basis to conduct economic research.  This page shows our most recent research leveraging high-frequency price data, as well as the US daily inflation index (updated monthly on this page).... "