Some countries in Europe is very low wage. There is an article about Italy millennia generation the 1000 Euro generation because that's how much many of them make per month. That isn't to say it's a living wage, but it's what a lot get. Tech isn't paid much compared to Bay Area either, look at London or Spain, dramatic wage differences (London especially since cost of living isn't different from Bay Area).

$1k Euro/month is decent living in Eastern Europe, Romania, Hungary, almost any place closer to Russia.