How much does it cost to stay in Neuchâtel Switzerland for 2 years?

Question

including all the accomodations, living expenses, train rides, entertainment etc.

Answer 1

All depends like housing which you find, 1 room or an apartment 2 parts, for example... here a site which will be able to help you

Answer 2

it depends where you are going from because the exchange rates are different for different places