I'm wondering exactly how the bonus for the fusion/anti-matter/quantum plants and the research coordination center work. Do you pay for the added IP's and RP's just like they were from a factory or research center, or are they discounted/free?
If you have to pay for the bonus IP's, it seems like you'd only build a fusion plant (+10%) after building 8-10 regular factories (but after 3 or so with the quantum). Similarly, 3-4 research buildings before the coord center.
But if some/all of the bonus is free, you'd potentially want to build one sooner.
Any good rules of thumb for when is a good time to build these?
Also, does it pay off to just start building all fusion/AM/quantum plants instead of factories after you've gotten a certain number of factories? Same thing for the research coord centers?