Depending on where you live in Canada the spread from regular to premium gasoline in the wholesale price for gas stations ranges between 6 and 11 cents a litre. However many stations charge a difference of 32 cents a litre between the two blends. The wider difference commonly seen in pump’s prices between regular and premium, is the markup gas stations charge minus GST/HST and the wholesale price difference. For a more complete explanation see:
From Our FAQs:
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Governmental Role
No. They tend to hide true daily market price moves that most can easily get through the internet and surprise many when, without notice they are suddenly changed, often with bizarre formulas that fail to reflect market realities.