Hello dear,
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Yes, Studying MBBS in abroad is safe until and unless you study in recognised college.
Some of the collrges will be rated low and you can find some reviews like money spam college etc.,
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So before going to particular college,I will suggest you to check reviews and rating of the college.
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If you would have mentioned College name,I would have helped you by providing you relevant information.
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Here are some of the Colleges In Russia with less fees.
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Orel State medical University
Cremia state medical University
Bashkir state medical University
Altai state medical University

I found this colleges with less fees.
Russia is listed in bottom in Colleges offering MBBS with low fees.
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So,Hope you understand Russia education.
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Best of luck