Hello Vera23
What concerns the prices, without knowing the date of travel or any screenshots, it is hard to follow your saying. Do you have the Half Fare Card? If not, be careful you are not going to mix up Saver Day Passes for ½ fare versus full fare.
A Saver Day Pass allows you to travel on almost the entire public transport network for one day. You are free to choose your route.
Kind regards,
Roland