The house that I have just moved out of, need 3 open fires to heat it, we frequently woke up with ice on the windows and wore several layers of clothes - but if we were still living there we would not even be able to afford the coal and logs used to supplement the oil.
Also, not everyone wastes there money - some are already barely putting the heating on, missing breakfast to ensure their kids get food or to be able to catch a bus to work.
This will tip them over the edge - but hey at least they will have the cotton wool to keep them warm