There is no set fare for resorthoppa.com
You have to insert your dates, times of arrival, departure etc. This makes the price flexible and like airline tickets - not all pay the same.
So 21? and I have presumed return is possible. I tried (on random dates) and it was 25.90? return. You can also pay in pounds.
The cheaper and better value the transport to get to the area is, enhances it in these times - does it not?