Well, let's just say that €40 is about $55 and then €50, which an average 3DS game costs for Canyarion is almost $70.
Here in the UK most 3DS games are £30 online, but if you go into a store, they'll more than likely be £40 or so. So we pay something between $48 - $65.
I don't see how Capcom is greedy, as far as I am aware this is the first 3DS cartridge that has a 4GB capacity, I'm pretty sure that the highest capacity cartridge that has been used for the DS is somewhere between 512MB-1GB. Maybe 2GB.
The standard 3DS cart is 2GB in size, so of course having a cartridge double the size of that is going to cost more. As Kafei previously stated, we have seen this with SNES games, N64 games and quite a few DS games. Whilst the DS games are Japanese exclusives for the most part, they still cost more because the cartridge they are stored on has a higher capacity than any other DS game out there.
As Kafei also said, he paid the equivelent to €84 for Conker's Bad Fur Day when it released. That is around $115 which is pretty ridiculous for a game, but hey. 
I'm not gonna complain about the price of games, I'm also not gonna complain about certain games costing more than others, because it's nothing new. Also, although this may have a RRP of $50. I'm sure some places will sell it for $45 or something.
( Edited 08.11.2011 05:31 by Mush123 )