From
the BBC» Passengers from Belfast can pay double to Dublin
Rail passengers travelling on the Enterprise rail service from Belfast to Dublin can be paying more than double what passengers going in the other direction pay.
In fact, it can be cheaper to travel first class from Dublin's Connolly station to Belfast than it is to travel standard class from Belfast to Connolly.
The Enterprise service is jointly run by Translink and Irish Rail.
However, depending on which side of the Irish border you buy your ticket, it will determine how much you will have to pay, and the differences can be vast.