Visa Days Calculator

Hello All:

I am an Indian citizen and have a 14 day on arrival visa.

I am travelling to HK and will arrive there on the 22nd march 2013.

Question 1 - When does a 14 day visa expire? on the 04th april or the 05th april? When do I need to exit?
Question 2 - This on arrival visa is free of cost? if not, how much is the cost of this visa of 14 days?