Really? I didn’t hear that people were shocked at thinking 300 million USD was that little of money for Eidos. It seems about right to me. Especially through Square Enix’s eyes where they had just put out GOTG which didn’t sell well enough to them.
Square Enix was going to close down or sell IO Interactive as they had pulled funding and were talking to other companies to sell them off. IOI employees triggered the MBO clause and made SE sell to them. This was only 2017.