I might be able to help you. I have about 14 years of experience teaching English to non-native speakers, a master's in TESOL (Teaching English to Speakers of Other Languages), and some ESL certificates. I have a lot of experience teaching the TOEFL and some experience teaching the TOEIC.
Are you from Russia? I have taught a lot of Russian students, so I am familiar with Russian grammar, vocabulary and pronunciation issues in English. (Also, right now I am focusing on learning Korean, but next year I would like to have a Russian tutor or conversation partner. I don't know if you would be able to help me with that in the future.)
So, let me know what you think. I live near Seomyeon, but, as you said, Skyping might work too. Also, do you have a TOEIC book? How much experience do you have with the test? Do you want one-hour lessons or 1.5? Thanks.