Whilst still laughing at SpeedbirdXK8's comments RedhillPhil please refrain from presuming that the punters will all be coming from central Brighton ... Do all Southampton's punters come from Central Southampton ... Both Brighton & Southampton having PDQ train lines to central london? ... What's the train time to/from London/Paris and Shoreham-By-Sea?
Suggesting a fare in GBP's out of Pontoise, Pontoise being on the Euro, well perhaps the operator behind the website has a fixation with the number "sixty nine" which might be all one receives for their money!