Cost of living in Guam is 85% more expensive than in Abuja (Nigeria)
This comparison is lacking data. It provides a decent comparison, but it is not yet reliable. It is based on 407 prices entered by 43 different people.
For example, you would need at least 3,119,124 ₦ ($8,737) in Guam to maintain the same standard of living that you can have with 1,690,000 ₦ in Abuja.