If you write letters to the women from first 100 pages of search result then you can be sure to receive the answer soon.
If you like some Russian woman, have passed certain period of correspondence on the site with her, called her and decided that you really want to meet in real and maybe develop your relationships further then we advise you to go and meet her.
It is really difficult for an average Russian woman to receive visa to some Western country, not because the woman is fraud or not eager to go but because governments of western countries make everything possible to protect their countries from possible immigrants.
We highly do not recommend you send money for a woman to come to see you.
If you are looking for a Russian wife then you have found the right site.