Board Thread:General Discussion/@comment-26901329-20150721091358/@comment-24674051-20150721144609

The price of magic is what it exacts from the weilder. Remember in "Going Home" there was a price to pay, but it was specifically Regina's price (losing Henry). Yes, the others also paid a price in the collateral damage, but Regina's was probably the highest (right up there with Snow and Charming).

In the case of the Love Potion and Wishing Well, the price would be Gold's. And I would say that the price was the completion of the Darkness's hold on his heart and his near death. Also, brining magic back evenutally cost him his son, the one reason he was manipulating all of the events in the first place.