Statement:
In Poland, mobile Internet is on average less expensive than in South Africa

In the Most expensive mobile internet rating Poland holds position #144 ²⁰²² out of 204 and South Africa is #77 out of 204 ²⁰²².
Position of Poland is better than position of South Africa.
Both countries holds average positions in the "Most expensive mobile internet" rating. So Average price of 1GB (USD) is an average for both Poland and South Africa, 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.

   Poland	'Average price of 1GB (USD)' value is	0.41
   South Africa	'Average price of 1GB (USD)' value is	2.04