How can prices be so different for the same brand?
Petrol is like any commodity and retailers are free to set their own prices. Even though a site may be branded a particular way the station may still be owned independently or it could just be a marketing strategy of the petrol company. In some cases petrol companies have used pricing strategies to be the cheapest and the most expensive, particularly on a price hike day. This is why we strongly encourage people to use FuelWatch to check prices before you fill up your car and make sure you are getting a competitive price.