Never say never. I turned up at Birmingham International in July 1999 and got a ticket to Dublin on Aer Fungus for £39. I'd missed my Eurolines Coach at Digbeth because of a rail fupp up. Didn't even need photo ID back then either. Aahhh, those were the days....You've never been able to just turn up at an airport and get on a plane without paying through the roof, why should the train be any different?