When you consider how much the Canberra Centre must be earning from its paid parking in the city, I find it incredible that they seem incapable of keeping their money spinners in working order.
I guarantee that on at least 50% of visits to the centre, one or more machines are not working. I can only think that the amount of time spent wandering around looking for a working machine must add to their revenue. Certainly there is no consideration of customer service.