Mr. David Franks:

One can purchase a single fare at a ticket office for €62 and one can avail of an online fare for €43.99 if it is bought up to 90 minutes beforehand. At present a single fare ticket from Cork to Dublin costs €9.99 if one books it online in advance, which is a very good offer. Prices vary and depend on whether one turns up on the day of travel at a ticket office or books a ticket in advance. The day return fare can be the same price as a single ticket but only on limited trains. That fare may have caused some confusion. One can avail of very good deals if one books online.