Brabazon,
either bring a calculator next time or realise that what you were paying for is not having to queue.
When I fly low cost, I realise that everything that happens on an FR a/c costs money. I therefore either buy drinks etc. in advance or go without. If you don't keep track of what things cost why did you bother flying L-C in the first place? <img src="confused.gif" border="0">