This is true and one of the known limitations of PPP. Having lived in 6+ countries (rich and poor) there is no “equivalent” across many countries. “Shelter co

This is true and one of the known limitations of PPP. Having lived in 6+ countries (rich and poor) there is no “equivalent” across many countries. “Shelter costs” in say the US and Laos have no equivalent. The shelter in the US is unobtainable in Laos, so saying “$30,000 spent in the US is equivalent to $1,000 spent is in Laos” is not possible.