5 Most Expensive Watches That Cost More Than Your House

5. Jacob & Co. Billionaire Watch – $18 Million

Floyd Mayweather owns one, which tells you everything you need to know. The Jacob & Co. Billionaire Watch is covered in 260 carats of emerald-cut diamonds on every visible surface—case, dial, bracelet, you name it . Designed for people who want to wear their net worth literally on their wrist, it’s less about horology and more about flexing at an Olympic level. Only 18 exist, and spotting one in the wild means you’re probably in the presence of serious money.