You know its hard for me to believe its a one off.

they would sell out literally worldwide, thats a multi million dollar payday. Not that they need it, but when I saw page and plant (seperately) in the 90's they both still had a little magic.

I'd pay to see Led Zep perform again, even at this advanced stage. If the hype and demand is all its billed to be for this concert in the UK I wouldnt be surprised if they didnt announce more dates in the spring.