As a non pilot. But I have an interest in FR as my mother lives in Spain, so comes over to LPL from GRX on a regular basis. She was aghast when her baggage costs more than the flight,taxes,etc. All is not what it seems,as they seem to not want hold baggage to keep the costs down. But this would be unavoidable on a transatlantic trip.
If I went over the pond with FR, the way I am looking at their operation is that I would have to travel with no baggage,etc. as I would be hammered by the 'add-on's'. I wouldn't even contemplate it with myself,g/f and 3 kids as the charges would be way through the roof.