This is the cheapest I could find it anywhere, and they'd run out, as had two other stations I visited. Even this 'cheap' petrol works out at £4.55 a gallon! ($9.38 usa, $9.05 can)
I should point out, this is the budget petrol, if you want premium add another 12p a litre.
We pay 52.35p in tax on a litre of fuel. Then, on top of that they have the cheek to charge another 17.5% 'value added tax' (VAT) on the combined price of the fuel and the tax. That's a tax on the tax! So in all 69.85% of what you pay at the pump is tax...WHAT THE F&*£K!!!!