“Now, there are many attempts to calculate the amount of savings or not-savings, how is it better to compare - with the month or the quarter, but numbers are a stubborn thing, and even if we take the price that was offered by Gazprom with a discount, then Naftogaz still has managed to save about $400 million,” Kobolev said. He stressed that this is a positive difference, when Naftogaz bought gas on the western border of Ukraine, not on the eastern one.