Such tours are not very expensive, so almost every man can allow himself to make a voyage, even if he is unemployed. Some mass media report that these men are not of a good quality, they have lost their hope to find a wife in their country, that's why they want to meet someone in Russia.
They feel like they are kings there, because too many beautiful ladies wanting to marry a man from abroad surround them. The only thing they need is not a big some of money to provide good holidays with the ladies for himself. It's enough to present a small souvenir to a lady and she'll be happy and gave him everything he wants. In the morning he can promise to call her some day and disappear leaving the lady alone.
The guests have understood that making a promise doesn't mean the necessity to marry a Russian bride. Moreover she agrees to wait for him as long as he wants, using all her forces to reach the main aim - marriage.
Sometimes a miracle happens and a groom marries a bride, but it doesn't mean that a Russian bride will be happy abroad. Having appeared in the USA the woman recognizes that her happiness is unreachable. Her new husband is not so liberal and honest as he used to be in Russia. He doesn't have any big house and "Mercedes", and he just needs a cook to run his little dirty flat.
The only thing the woman can do in this situation is to submit it or to go back to Russia.
In fact the dream of a handsome prince can be the banal slavery.
But for grooms it a good chance to spend their great holidays surrounded by beautiful Russian brides.