Statement:
In Tonga, mobile Internet is on average more expensive than in Afghanistan

In the Most expensive mobile internet rating Tonga holds position #105 ²⁰²² out of 204 and Afghanistan is #120 out of 204 ²⁰²².
Position of Tonga is worse than position of Afghanistan.
Both countries holds average positions in the "Most expensive mobile internet" rating. So Average price of 1GB (USD) is an average for both Tonga and Afghanistan, compared to most countries of the World.

Referencies:

1. Most expensive mobile internet ²⁰²² by cable.co.uk

   The countries in the rating sorted by 'Average price of 1GB (USD)' in descending order.

   Afghanistan	'Average price of 1GB (USD)' value is	0.90
   Tonga	'Average price of 1GB (USD)' value is	1.19