Plan price divided by its data allowance.
Price per GB is the fairest way to compare fixed-data plans of different sizes. A small plan often costs far more per gigabyte than a large one, so the cheapest headline price is not always the best value.
It does not work for unlimited plans, which have no GB figure. Compare those by price per day instead.
What to check
- Divide the total price by the GB, then compare plans of similar validity
- Low prices often mean fewer countries on the list