关于华沙机场至中央火车站的公交车

要搭乘175路在DWORZEC CENTRALNY下车，之后搭火车去Lublin.

请问怎样买票？

得到的manual如下

Change your money - you will need about 150-200 PLN.

Go to the newsagent’s shop or automatic machine to buy a bus ticket for 2,40 PLN. (beelet normalnee – in Polish). Although you might be a student, there are no discounts for foreigners on buses, trams, metro or train. You have to study in Poland to have discounts or have a valid ISIC card which gives you a 48% discount (so the ticket will cost 1,25).

但是我想公交车不至于125兹罗提单程吧。。。