Which country has the best value than?

Chile! It has the lowest increase in price compared to the same amount of increase in points.

Scatter plots represent the average price at each critic point (80-100) while the dotted red line is a linear regression line of price vs. points for top 6 countries. The various lines represent different countries with a different slope. The steeper the slope, the more the price of the wine is influenced by the critic points.