Tell me about it, i had to do a double take and explain i only wanted 2 pints when that first sank in. Cheapest stuff is Australian grown wine nicknamed "Goon" that you can buy in supermarkets in 4L box cartons for next to nothing. Everything is more expensive unfortunately, which was a shock to us as well when you think of the stereotypes.
Due to the price of everything we ended up living on No-frills supermarket branded noodles, McDonalds (about on par with our prices and free wifi) and some restaurants that offered $10 steak meals (win). I probably knocked about 2yrs off my life with that diet...