Comment by bpt3

1. It sounds like you're just describing a larger "basket of goods"? That data is available, but also valuable, and I'm not sure why the basket of goods tracked by the CPI or NPR would be inadequate.

2. This specific exercise is designed to be relatable to individuals (in general, and specifically ones such as the people interviewed in the article who claimed that their grocery bill went up about 50% in a year, which is implausible to put it politely) so that they can understand the actual level of inflation rather than the one they imagined in their head.