For a few years now, the Billion Prices Project (BPP) has been collecting prices off the web, as a test of an alternative consumer price index. http://bpp.mit.edu/ Apparently, there is a commercial value to its product, so, there is now a spin-off company that sells its daily index information on many countries. At least the U.S. trend info is still available in public: http://bpp.mit.edu/usa/ Unfortunately, it doesn't appear that the data for the Eurozone is so easy to post. In any case, I am wondering how BPP calculated inflation is doing compared to the official EU calculated inflation. Anybody know? BTW, it turns out that the simple CPI in the U.S. is pretty close to the BPP. That surprised me-- I would have thought, based on the simplistic way the CPI is calculated, that the indices would have diverged further.