Fun With Purchasing Power Parity

Groceries are quite expensive at the Providenciales supermarket compared to what you pay in Washington, DC which induced me to want to find out if the price level overall is higher here or if it's just food. That led me to this neat map of Purchasing Power Parity all around the world:

Richer countries have higher price levels in general. But Japan is not richer than France, Germany, and the UK which makes its high cost of living evidence of a low-productivity service sector.