How expensive is the sphere?

Excuse me, could you kindly enlighten me on the pricing aspect of this sphere? I find myself intrigued by its uniqueness, yet I'm curious about the financial implications of acquiring it. Is the sphere categorized as a luxury item, or does it fall within a more accessible price range? Additionally, are there any factors that influence its cost, such as rarity, materials used, or perhaps even the artist's reputation? Your insights would be greatly appreciated.