I had heard a long time back that for fracking to be worthwhile, oil would have to be priced at more than $30 a barrel. Did that figure increase?
You were not told a truth. We have been hydraulically fracturing wells since 1949.
It isn't the process that justifies the cost, it is the formation. At low prices ($30), it cost too much to go after tight formations like the Bakken and Eagle Ford. Drilling and completing the wells would cost more than they would produce.