What is the most expensive macaron in the world?

Could you possibly enlighten me on the subject of the world's most expensive macaron? I'm genuinely intrigued to learn about the unique flavors, ingredients, or artistic design that have contributed to its exorbitant price tag. Perhaps it's adorned with precious gems, crafted from rare ingredients, or a masterpiece of culinary artistry? I'm eager to discover the answer to this intriguing culinary query.