If you paid $599 for your PS5, you're going to hate this. Sony is about to sell the same 825GB digital PS5 in Japan for $348, and it went out of its way to make sure you can't buy one. The Japan version only shows its menus in Japanese, and it won't work with a PlayStation account from anywhere but Japan. Even if your cousin in Tokyo shipped you one, you'd be stuck with a console that doesn't want you. There's a name for this. Economists call it price discrimination, which just means charging…