Just thought I'd ad some interesting figures I found in The Bulletin a few weeks back. All have been converted to Australian dollars per Litre.
-World Bowser Prices-
Netherlands - $2.26 UK - $2.02 Germany - $1.94 AUSTRALIA - $1.16 US - $0.77 Russia - $0.73 China - $0.63 Saudi Arabia - $0.32 Nigeria - $0.13 Venezuela - $0.04
To add to what L18_B110 said, with petrol at $1/L, Refinery price=39c Federal excise=38.1c Retail margin=13.8c GST=9.1c
and how long will it last? current projections say there's about 40.5 years of oil left, but to put that in perspective, in 1974, they predicted 7 years until oil ran out.