the 1-kilogram gold bar is a major investment with a lower premium per ounce than smaller bars. It's commonly stored in secure vaults. 400-Ounce Gold Bar (Good Delivery Bar) Value: $1,060,000 to ...

At today's gold price of $2,733/Oz, just a single 400 Troy Ounce 'Large Bar' will cost you $1 million, or £840,000.