Olive oil used to be $10 per litre but I haven't seen this price for a long long time., Even Pams one is $19 per litre in store. I used to be able to get 3litre olive oil from the warehouse too for less than $30 but not anymore.
Where do you get your Olive oil from? Bulk buy?
It's a global thing. Your best bet is using a different oil wherever you can and saving olive oil for finishing and salads.