There are many Korean restaurants in Moscow.
In the Salyut Hotel, there are several including
Leninsky Prospect 158
They have two lunch specials for 300 rubles on weekdays and the specials rotate daily. They also have a buffet on Sat from 12-16 for 450 rubles
In the Korston hotel there are also several including Shilla which has lunch specials for 300 rubles. 300 Meters to the right of the Korston hotel is Seoul Restaurant which also has excellent food but no lunch specials.
The below photos are from food ordered at Shilla from the regular menu and cost about 650 rubles.