Well jobs are tough everywhere, that's a fact.
Look through the other posts of people who have inquired about Montenegro and where to live.
It is cheaper in the center and north, as compared to the south. Rentals vary from 250 dollars upwards, depending on wants, needs, location... A beer out in a bar goes from a $1.50, pizza about $4-6, etc .etc...
It is a safe country, still can let your kids outside to play :-)