Is $300M for Tomb Raider and Deus Ex really that big of a steal?

When I heard that Square Enix had sold Tomb Raider, Deus Ex, and three respected game studios to Embracer Group for $300 million, I instantly became that guy who knows exactly how much everything is worth but can only back up his valuations with rhetorical questions. $300 million? For Tomb Raider? And Deus Ex? Are they serious?..
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