Cost of living in Lubbock, Texas (United States) is 20% 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 1,035 prices entered by 118 different people.
For example, to keep the same standard of living that would require AU$7,100 in Adelaide you would need to make just about AU$5,645 ($4,092) in Lubbock, Texas.