That's a very oversimplified view of the matter
Firstly, Wii games are about the same level of difficulty as PS2/GC/xbox games, hence Wii games are priced at $50
Developers are making good profits on Wii games, hence the $50 is validated
The PS360 games are $10 more because of higher development costs
Developers are going broke due to the development costs of PS360 games
Therefore the $60 price is the problem, and 3 options are available
Raise PS360 games to $70 to get more money per sale
Drop PS360 games to $50 to get more sales
Stop making big budget PS360 games







