£42 isn't great, but it is far from the worst. The airlines do absolutely fleece you from my experiences on tour. I don't think our spam filters on this site would let me tell you my honest opinion of RyanAir, where as on the flip side, one European airline let us take the instruments on board for free and one of the crew came over to talk guitars with us the whole flight. For my show next month in Norway, my bass has it's own seat as it works out cheaper.
We learnt the hard way but I recommend anyone not aware of how airlines fleece musicians, read up and do some homework before booking flights. It can be pretty grim. Hard to believe there are yet more ways for musicians to get ripped off!?!