I think the problem is that people want to rush the process so quickly. When I married my ex-wife, we communicated for some time (before the time of Skype and sites such as this) and even after the wedding it was over a year before she could join me in the US (there are other visas for family now available that were not before). And while there cannot be large breaks between the couple being together (I think 6 months maximum), this is about a lifetime together and not a race to get married. There was another girl i was serious about after the divorce and I visited her and then she came to me twice before we decided to end the relationship. Expensive yes, but much less expensive than an unhappy marriage. Maybe having gone through the process, it is easier to see the end result. But this is not a game or a whim, we are looking for the love of our lives. If there are questions about the man or about the woman, then explore those questions first. Make certain the relationship is real and strong and work at it. Love is an action, not a feeling. It is a choice we make every day to love our special person. To that end, an expense now saves more expense and drama and all that can come from a failed marriage.
I wish everyone to find their second half and to be happy. Think with your mind and love with your heart and use both together, not just one or the other.
As for the women not able to afford such costs, it is not always easy for the man to afford such costs also. But if a man wants to be with a woman, he will find a way. I worked an extra job when I first met my ex-wife just to have the funds to call her on the telephone. I paid all the expenses for my girlfriend to come and visit both times as she never would have had this money in any reasonable amount of time. I think she did not realize though that there was a sacrifice to save this money. We are not all rich in the US despite the higher incomes. But if a man cannot figure out a way to manage these expenses, then how will he support a family. The wife will not work for some time and so there cannot be an expectation for income from her. I think some of the problem is the men do not learn enough either about what they are committing to and promising. It is a bigger responsibility than marrying someone from your own country in almost all cases.
Sorry to hear about the girl from Ryazan. A failed marriage, especially as it sounds like it happened so soon, is never pleasant.