The following is a compilation of old reviews I have done on the wines of Bulgaria.
2004 Vini Merlot, Thrace Bulgaria: This is a very dry wine ($11) and very different from most other merlots. It is more tannic, almost bitter, and not like the smooth taste of other usual merlots. I did not care for it myself but others seeking a more unusual merlot might like it. And for the price, it would be easy to give it a try.