I don't believe we paid a ransom to the devil/Satan. At least that's not been taught to me or what I've watched and learned in the lectures I've seen.
St. Gregory the Theologian - "Now we are on this to examine another fact and dogma, which in my judgment, is very necessary to inquire into. to whom was that blood offered that was shed for us, and why was it shed? I mean the precious and famous blood of our God and High Priest and Sacrifice. We were detained in bondage by the evil one. Sold under sin, and receiving pleasure in exchange for wickedness. Now, since a ransom belongs only to him who holds in bondage, I ask then to whom was this offered and for what cause? If it was offered to the evil one, what an outrage to say such a thing. If the robber receives ransom not only from God, but a ransom which consists of God Himself and has such a lusterous payment for his tyranny, then it would have been right for Him to have left us alone all together. But if it was offered to God the Father, I ask first how? For it was not by God the Father that we were being oppressed. And next, on what principle did the blood of His only begotten Son delight the Father who would not even receive Isaac when he was being sacrificed by his father, Abraham, but changed the sacrifice by putting a ram in his place. Is it not evident that the Father accepts Him, but neither asked for, that neither asked for the sacrifice, nor demanded it, but on account of the Incarnation, and because humanity must be sanctified by the humanity of God, voluntarily, that He might deliver Himself and overcome the tyrant and draw us to Himself by the mediation of His Son, who also arranged this to the honor of the Father, whom it is clear, He obeys in all things."