I was getting quotes for my car insurance last night and i was shocked to find out that with AAMI putting in a different address, just one house number different gives a whole different price for the insurance! The houses on each side of me were coming up with prices $53 cheaper than my own address. Not changing any other details other than the street number! Even more ridiculous is my house has a double locked up garage that the car would be kept in whereas both of the neighbours only have a carport, yet their address gives cheaper insurance! $53 is quite a difference too! Also tried a few different numbers in the street and other streets nearby and got about 5 different prices all for houses within a minute of each other!
On top of that, one of the questions they ask is: "Who is your previous insurer?" Changing no other details at all apart from previous insurer also gives different prices for the insurance premium, differences of up to $80! If you were previously insured with RACV compared to Coles Insurance compared to Allianz etc, all gave a completely different price for your insurance premium with AAMI. What does your previous insurer have to do with your car??? What does it matter who your previous insurer is? There was about 50 different previous insurers to choose from and nearly every one i chose gave a different price to the premium if you were to sign up with AAMI.
Safe to safe i wont be getting insurance through AAMI. They were alot more expensive than other companies anyway. Couldnt believe the difference in prices just for one house number difference and based on who your previous insurer is!!!
EDIT: I also did alot of quotes on the RACV site but their premium price didnt change based on your address, all street numbers in my street came back with the same price for RACV. They dont ask who your previous insurer is either. Im about to have a look on some other insurance sites and see if their prices change depending on address
Information they decide this on are generally taken from population studies, AFAIK. They don't make logical sense most of the time.
That being said, I usually just go with whichever insurance has the cheapest and most agreeable terms.