I'm all in favour of 'unbundling' and would not like to see the EC require prices to be quoted including optional charges.
The only thing I would like to see regulated is the scam of saying credit/debit card fees are optional because the said company offers one option, that is difficult for anyone to take up, that is free.
I'm not sure what the magic solution to this but I suggest that credit/debit card fees be included in the price - and that the airline should use the 'average' charge paid by consumers to them in the previous month (quarter / year ???). The final price would vary up/down depending on the actual card used.
The other option would be to require the most expensive charge required by the particular airline to be included in the quoted price. This would be the maximum the consumer would actually pay, and some could pay less. This could also lead to increase competition on price, what we don't see with the current system where the charge component is hidden.
Any other ideas?