A friend of ours had a similar problem last year with the cost, he was told that it was 110 Lev (return) with a taxi for two people, suprising enough the taxi didn't pick them up again at the end of his holiday, so it cost him another 60 Lev to get back to the airport. normally we would pre-book with Tom from Lion Services (
info@lionpropertyservices.com) he charged 50 Lev each way in 2009, total cost for two people was 100 Lev which I thought was really good.