Sextus, those Russian, Ukranian etc women are looking for a husband that will maintain them in a luxurious or at least middle class lifestyle in a Western country.
Once the romantic phase of the correspondence is over they will start asking you vital questions about your occupation, income, property etc.
They are not going to come all the way over here to live in poverty.
The older unnattractive ones will settle for less but not the young pretty ones.