How much is Christmas going to cost you for presents? As for us it will probably work out about £400-£500. I have two sons who are grown up and earning, and a young teenage daughter, my wife has two teenage sons,we dont spend too much on our parents as they say we got everything so dont go mad. As for our siters brothers and their children we dont bother so much, that way if they are finding the budget tight then they wont feel guilty about not getting us anything.And its true the older you get the less you need.