[EgoFG]

Hmmm I got some figures
MarketIndex.com for Crude in USD
RBA.gov.au for USD/AUD exchange rates
FuelWatch (WA) metro fuel prices


Makes for an interesting chart - 2008 saw an AU$ Crude price drop of maybe 50%, but only a 25% drop in ULP, similar thing in late 2014.
The price increases are passed on quickly, and completely, but not so when Crude drops.
I added a line that expresses Crude as a % of ULP - call it %markup - the oil companies would say this is static ... but the figures do not bear that out. This percentage actually increases when prices are high - this is mathematical evidence of gouging.


Also interesting to look at the gap between Crude and ULP on the graph. More markup since 2009 then in the 10 years prior.


I do not have an account to share pictures publicly - but happy to share my spreadsheet by PM