Mainly the games have to be rated by the ESRB, and ESRB rating are through the roof! The ESRB have shot down those claims.
The ESRB has a reduced fee of $800 for games that have development costs under $250,000, said ESRB spokesman Eliot Mizrachi to Kotaku.
"This would likely apply to virtually all PSP Minis.</blockquote>
Interestingly Fieldrunners' developers' don't quite agree with this sentiment.