Auctions offer a unique and exciting opportunity to score amazing finds, such as antique jewelry or even a house at a fraction of its market value. Conversely, high-end sales can generate tens of millions of dollars for the seller. In fact, private auctions sometimes pass around the most valuable memorabilia in the entire world. Sotheby’s and eBay are just a few examples of places where remarkable items, such as giga-yachts, entire towns, violins, and even Marie Antoinette’s pearls, have been auctioned off to enthusiastic buyers who are willing to pay exorbitant prices for these rare treasures. These are the most expensive items purchased at auction in recent years. Which is your favorite?