I just came across some information that’s not actionable and therefore doesn’t really matter but it is interesting. Cable.co.uk has a fascinating page that describes the cost of mobile data in 228 countries. For each country, they show the cheapest, most expensive, and average cost of a gigabyte of mobile data.
There’s a map that you can hover over to see the results for your country. The big winner is India with an average cost of \$0.09 per GB. If you’re in St. Helena the results aren’t so good: you’ll be paying \$52.50 for that same gigabyte. In general, islands nations don’t fare so well for obvious reasons: they don’t the fibre infrastructure to support mobile data. The 5 most expensive countries are all island nations.
If you’re in the U.S., you’ll be paying an average of \$8.00. The map is color coded so you can see how various areas of the world shape up.
As I said, there’s nothing you can do with this data other than gloat or wail so it’s probably of limited usefulness. Unless, that is, you’re exceptionally mobile and the cost of mobile data is one of the most important desiderata in your choice of location.