[deL]

After reading the updated OP you are either concluding that buying 2 overlords is indeed 200 minerals. In which case, congratulations. Or you are concluding that 100 minerals you spent on an overlord is 100 minerals you can't spend on anything else, in which case, I can't wait for your article about how using a larva for a drone means you can't use the same one for zerglings.

I still don't know why you insist OL scouting costs 200 minerals. You have to spend 100 anyway so it's only 100 extra and I don't see adequate justification for otherwise.