Life in Bulgaria is not very expensive when compared with other countries. However, course fees vary according to the chosen topic. So fees vary from 3000 to 8000 Euro. The accommodation rent start from 250 euro and according to individual preferences could go up to 350 euros. Sharing a flat brings the accommodation cost down. So, the cost of living could be between 700 and 800 euros.
Please bare in mind that the living costs is a personal matter.