A story Friday discussed the development costs of an indie game for the PSP versus the iPhone. While getting an ESRB rating does cost money, the board reminds that a different rate structure will likely apply to PSP Minis titles.

ESRB spokesman Eliot Mizrachi contacted Kotaku to remind that the ratings authority has a different rate schedule for smaller games. "The ESRB has a reduced fee of $800 for games that have development costs under $250,000," Mizrachi said, "which would likely apply to virtually all PSP Minis."

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