Retrofitting retrofit nitpicks

[brianeyci]

I thought I understood retrofitting, that it was at most 150% of minerals/org/rad cost.

But, I obviously don't. I just retrofitted a ship that cost 300 orgs into something that costs 3k org!

So, how exactly does retrofitting work? Does it add up all the costs min + org + rad then multiply by 50%?

Brian