Interesting as the other articles mentioned an 80% price increase...
That 80% would be the contract price differences, but they have agreed to waive the export duty, bringing down to a 43% increase.
But remember, we are talking about increases from below market rates, even at the time of the previous contract. They were “gifted” a discount to begin with.
They wanted to keep their discounts they should not have picked a fight with Russia by that Kiev coup