Considering how games in the US only cost ten bucks less....and according to Steam, more than sixty bucks (Srsly, almost all AAA games from the end of last year came out about seventy to a hundred bucks day one!).
But on the other hand....they shouldn't go up in price at all. PS1 games cost a hundred bucks NZ when the games first came out. Same with PS2, X-Box, PS3, 360 and PC. I remember when people were afraid PS3 games were going to cost nearly two hundred bucks because they were coming out on Blu-Ray discs. Never happened. Ever. Except for CoD games. There is no reason for games to be incredibly expensive. In fact, there is no legitimate for a game to cost more than sixty bucks anywhere, in any country. Christ, in New Zealand, Modern Warfare 3 came out at a standard $150 for console, and $130 for PC. For a game that has as little effort put in as MW3 (The single player was only five hours long, and multiplayer takes fuck all time to make, especially when there was near on no difference between 2 and 3's multiplayer.)
P.S. Not a rant at CoD, it's just one of the best examples.