Hi contactjjjb and welcome to CS!
Kafenio arent the only ones that use Procal. I know of at least one other great cafe at Cronulla that use it successfully and we do too. Its price is comparable to Crema.
And Kafenio didnt decide to charge $5 because of any milk change. Word is that they decided to bump their price because they were, "too busy". So now they can make the same amount of money and work less. I dont think they do decaf or skim either, and that certainly has nothing to do with milk. Thats not meant to be a criticism - we each do things the way WE want to. Just dont make milk the scapegoat.
Am curious to know what you mean by dramatic change...bitter, sweet, weak...?