Only use real, professional and verifiable agencies.Check the agency If you visit the website of some Dating Agency, try to read all the information about this website before you start to browse through the ad's.
Ask specific questions and check if you receive answers on these questions In case you are using an Agency with email forwarding or other mail-services, and your correspondent is not responding on your specific personal questions, this could be a sign of being suspicious.
Another important thing is to confirm with her if your (original) letters indeed are reaching her.
But if this and all our other information is not enough for you to feel yourself 'well prepared' and certain then you always can decide to provide yourself with more information, tools or services.
It's you who has to make the choices, but making the wrong choice can cost you a lot of money.
You will learn more about the Russian-women- dating-world in common.
Being prepared is being halfway your success in finding you Russian lady.Try to send copies of your original letters using postal mail or a fax machine at her office (if possible) and ask her if these letters are the same she received through the Dating Agency you are using.I know examples that some Dating Agencies, with this kind of services, can create additional questions or add more text to your letters or even change your letters, just for the reason to keep you as long as possible as their customer.Try to find out if her letters to you are very personal and don't look like standard generated letters.Persons who are just trying to get your money are using pre-defined letters, just because they don't have the time to write each person in a personal way.One of the most important thing is to try to get her on the phone now and then, in this way you can confirm your and her letters to each other.