The price of petrol I paid during May 2017 averaged $1.38 per litre for 91 Octane unleaded add 10-15 cents for 95 Octane and usually 15-25 cents for 98 Octane, location is Melbourne Australia. Petrol prices are the consistently higher than in past months for the usual reasons.
Note that fuel prices vary according to area and the level of competition and a whole heap of other factors like shopping discounts and so forth, however unreasonable high prices (relative to crude oil prices) is greed. Also note that the Octane level I post here represents Australian measurement which is different from those in other countries eg. US.