I think your assessment is clouded by some strong moral issue you have with the idea of finding a spouse abroad, exploiting a differential in welfare between two countries.
You insist on the idea that the wife has been "bought", and that it implies some sort of dominant/ controlling attitude on the male's part. In fact I would argue that the opposite could be true: men who resort to "mail brides" are simply trying to find their way around a system that puts them at the bottom of the ladder, often exactly because they are not dominant enough. Dominant psychopaths don't need mail order brides, they are often successful and can find plenty of partners anyway.
Also, if we're authorized to draw psychological inferences from these choices: what do you think of women who choose to date (relatively) wealthy foreigners online, refusing to find a partner in their own country? It's not that there is a shortage of males in Ukraine or Brazil or the Philippines. These women are choosing to ignore local partners for the prospect of a life of comforts (because this is the idea you get from foreign media).
So if we inform our psychological insights to our moral biases, who's the psychopath here? The naive loser who thinks he can trick the system and get a partner above his level, or the ambitious girl who shuns her local suitors for the prospect of a wealthy life abroad with a stranger?
