Carriers always want to charge as much as possible. In most of the world you can still pay data in gold coins. Just this summer I was screwed by Vodafone chargi

Carriers always want to charge as much as possible. In most of the world you can still pay data in gold coins. Just this summer I was screwed by Vodafone charging me €6/day on the first network connection without a plan. This in the same country where I can get 200GB for €10/month