If we put a price range on "cheap" to be objective and have a reference point, I would say Php15k and below for a standard 14in hihat-16in crash-20in ride set. The brands mentioned above normally go beyond this price, unfortunately, both for brand new and 2nd hand. Those are the lowest priced good cymbals available locally. I would suggest that you go for a 2nd hand hihat and crashride set to fit it under Ph15k for now, and save for a future crash. What I want to point out really is that cheap is the opposite of good quality.
But, cheap and decent cymbals...if you really need cheap and decent now, at least better than the ones you described - paite101s, may I remind that it's brass, but decent.
In conclusion, i would save up for good quality cymbals if I were you because the benefit is for the long term...