Cheap relative to utility I suppose is the argument.   The crypto currencies are genuinely useful to some people and then theres the cost of transaction, bitcoin is quite high some complain so how much does litecoin cost for the services provided.  Anyone in a country with unstable currency should be considering using crypto currency, we could see massive growth that old story is still very much live I think but things are quiet I guess.
Look at Egypt if you havent, you'd be making out like a King if in that country relatively you had gone a different way to the official government sanctioned form of saving (spending even) your earned value