I messed up a few years back (blimey, it was 20!!!) and elected to pay a fine that I picked up in Lassithi province in Chania since paying in Lassithi would have involved changing travel plans. BIG mistake! If I'd paid in Lassithi, I could have simply handed over the €30 in any suitable office but to do the same in Chania meant visiting 4 or 5 offices to pay for stamps to stick on a form ("You must collect the form from X office first then come back for the stamps"...), get the form and stamps stamped then hand it over and get a receipt. That'll teach me to pass one of those rotovator powered tractors on the "motorway"!!!