Cost of living in Barranquilla (Colombia) is 11% more expensive than in Gdańsk (Poland)
This comparison has some inconsistent or sparse data. It already provides a reliable comparison but it is not bullet-proof. It is based on 471 prices entered by 65 different people.
For example, you would need at least 6,888 zł (COL$5,414,006) in Barranquilla to maintain the same standard of living that you can have with 6,200 zł in Gdańsk.