Last night I met a former hotel employee who hand-calculated inflation figures for the region around his resort, using year-on-year price changes for the official consumer price basket. He came up with an annual inflation rate (if memory serves) of 28%, which is nearly two and a half times the official Reserve Bank of Malawi figure of 11.4% (as of March).
I’m really surprised that the local rate would be so much higher than the national one, since a lot of the goods in the basket are fairly tradeable. I don’t, however, suspect that things are being intentionally gamed: I know lots of folks who currently or formerly worked at central banks and even interned at one myself, way back when, and they’re uniformly well-intentioned data geeks like myself. But this is a way bigger spread than we see, for example, across US regions, so I’m at a loss to explain what’s going on.