Cost of living in Lubbock, Texas (United States) is 15% cheaper than in Adelaide (Australia)
This comparison is lacking data. It provides a decent comparison, but it is not yet reliable. It is based on 928 prices entered by 103 different people.
For example, to keep the same standard of living that would require AU$5,400 in Adelaide you would need to make just about AU$4,582 ($3,291) in Lubbock, Texas.