Was A Mars Bar Really Only 2p In 1973?Rants and Raves by Mrs C - August 18, 2013Was a Mars Bar really only 2p in 1973? And petrol – was that only 7p a litre? Some things do seem to have gone up disproportionately it’s got to be said!House prices being one of those things. It was kind of assumed in the Eighties that you’d leave Uni and buy a house after your first year of work. Now it’s so difficult for people to get on the housing-ladder – even those who are earning relatively well.