Why is it that Moscow Russia is said to be the most expensive city in the world and yet rents there are less than Houston?

Update: according to Numbeo Moscow is more affordable than Houston. An apartment in city center in Houston is 1300USD whereas the same would be about 900 in Moscow. When they state this is compared to what locals would be earning? understand Russians do not normally earn as much as those who live in the USA. However the... show more according to Numbeo Moscow is more affordable than Houston. An apartment in city center in Houston is 1300USD whereas the same would be about 900 in Moscow. When they state this is compared to what locals would be earning? understand Russians do not normally earn as much as those who live in the USA. However the costs of living would also be equivalent of what they earn
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