Booked this morning for the first weekend of the new year, this was cheaper than any Ryanair flight to Germany:
DUB-FRA in C for 3375 miles+30GBP cash, 48GBP taxes, and 4,50GBP credit card fee
Y would have been available too, but I couldn't resist securing myself a free neighboring seat for 1125 miles+10GBP... ^