Earlier quoted context omitted.
My trick for international pricing was to copy Microsoft. Minecraft in the US sells for $26.99 USD [0] Minecraft in the UK sells for £22.49 GBP [1] or about $29.60 USD (+9.22%) Minecraft in Mexico sells for $479.00 MXN [2] or about $22.18 USD (-19.56%) Surely, if it's good enough for Microsoft, it's good enough for a company of one. The Big Mac index, while provides similar results, is a bit too disconnected from the…
That price is not really based on mass market affordability though. The UK GDP per capita is $43k USD and the US is $63K USD. The average salary in the UK is $38k/year and the average salary in the US is $63k. By all measures the UK is a significantly less wealthy country. Perhaps Microsoft choose their pricing based on other measures.
You can't make a direct comparison of "wealth" by looking at salaries. You have to take into account purchasing power parity, for a start. But then you also have to find a way to include the somewhat non-linear results of tax rates and services provided by those taxes.
For example, the typical US family of 4 spends $23k a year more on healthcare than the equivalent family in France.