Yes, you'd use something like the OECD's price level index: https://data.oecd.org/price/price-level-indices.htm https://data.oecd.org/price/price-level-indices.

Yes, you'd use something like the OECD's price level index: https://data.oecd.org/price/price-level-indices.htm https://data.oecd.org/price/price-level-indices.htm None of these are perfect, you're never going to get two truly comparable locations when accounting for mortage/rent, groceries, cost of transport, cost of consumer products etc., but it's a whole lot better than mainly looking at one variable (rent).