as much as i wouldnt like it to happen to me.. and it has in the past with a car... its difficult to say what to do.. just depends on your concience really if you can quite happily let someone down then and get more money from somewhere else.. then why not.. no money had been exchanged and there in lies the major problem imo.
I know a deal a deal an all but there a few different points of view to consider..
Oh well never mind hey.. apologies have been accepted and lets hope its ok from now on.