However, with the ramping up of decks that utilize field spells and continuous back row, Ghost Ogre is a great way of getting rid of those cards
White Card advantage, in white, in this economy
Honestly, it likely depends on the needs of the future plot
Between Abrade, Prismari Command, Force of Vigor, Wear // Tear, and Kolaghan's Command, not to mention cards like Assassin's Trophy, Abrupt Decay, Stony Silence, and Karn, the Great Creator, most decks will have some sort of answer to the artifact
They also have hidden, secret Missions that are not visible on the list, and only show up if you meet the conditions
The price is based on current market value and is fully negotiable from there