Hello there!
I can try and help you with recording the files for a moderate fee. Being a native Russian, I believe I have no problem with accent, and my English is fairly fluent as well. I can do your task for $35, and the recording might take me about several days, if my voice appears suitable for the service. I could send you the sample of my voice, if you need this for making a decision. Besides that, I have a brother who is Russian too and has a good voice as well, so if you need both male and female voices (for example), I might send you the voice samples of both of us.
All in all, I'm looking forward to our productive cooperation!
Best regards and have an awesome day,
Anastasia