In NA games are usually $60 right? Add the EU where games are discounted from the start (at least here in the UK) and assume for every first party game Sony get $15 for every copy sold.
My A-level maths tells me $15 x 1000000 sales = $15 million
No idea if that is close to break even point for games with high production value, my guess is that is not the case. Using the "GTA IV cost $100 million to make" example, would at least expect GT5 to be near that number.