@kowenicki
I really don't understand why you're calling ethomaz crazy on this topic. What he's saying is a common concept for gt5. Gt5's total development cost was $60 million, and out of that gt5:P was also released without any extra cost (bc its just the gt5 "early/incomplete" edition).
He's not saying gt5 had no development cost, just that its almost LIKE it had no cost bc the money made on prologue covered the cost, allowing gt5 to be pretty much all profit.
And I actually don't agree with ethomaz's statements saying gt5 to gt5:P is the same as halo 3 to halo 3:odst. From what I understood, halo 3 and odst are 2 completely different games with 2 separate development cycles and budgets. So this isn't the same thing at all.
Oh, and @ji99saw, no need to get so worked up over things that matter so little, especially when the other person in the conversation is being civil.