Mojang has announced that prices for the PC version of Minecraft are going up in some countries on May 23 in order to better align them with the U.S. Dollar. In addition, the PC version is also available in Japan and Korea for the first time.
A chart with the pricing changes for Minecraft can be seen below. Mojang says:
If you haven't bought Minecraft yet, it might be worth purchasing in the next week if your pocket money allowance isn't aligned with the United States Dollar. You could end up saving yourself a pretty penny.
It should be noted that these price increases are just for the PC desktop version of Minecraft. They do not apply to the console versions of the game, nor to the Pocket mobile or Windows 10 beta ports of Minecraft.