I think the goverment has a cheek trying to make the low fare airlines show the full cost of bdfare in their advertising. I have had a good few flights for 1p and 1c but the cost has been put up by Goverment Tax and Landing fees. In other words you give the airline 1p and the Goverment taxes you £15.
I use Ryanair and after you put in the date two clicks and you get the full price. Not exactly rocket science. They do show you the tax in a seperate box. What realy annoys me is the goverment going to court and spending my money on something as stupid as this.
The aim is to make the cost of the ticket clear, regardless of where the costs come from. In fact you'd be incredibly lucky to get one of those very low fares: they're promotional loss-leaders. Airfares are a dark art, carefully managed to extract the maximum yield from a flight, and a few cheap tickets is more than made up for by the tickets people end up buying regardless of the fact that they can't get a cheapie.
I booked my flight to Mallorca 8 weeks ago for £110, 0720 flight on a Monday morning returning 8 days later with BMI Baby, cost £112 inc tax and landing fees etc. Looked at the same flight today and it's now £141.