In your information about Visa fees though the Russian Visa Center you listed the Consular fees as $185 plus $38 administrative fees and $18 for letter of invitation = $236. Even if you add $85 more for a mail application the total would be $321. When I just looked at the Russian Visa Center site they have a price of $451 for a mail order application. That is $130 more!
@lewa Hello,
185 USD is consular fee if you submit documents directly to Russian Consulate.
At the visa center the administration costs were 38 USD and now it seems that they are 196 USD (makes no sense), so the visa administration costs is 381 USD (185+196).