When you buy Gold, the Gold supply can be a major factor influencing price.
A major consideration in the price of Gold bars is demand: what Gold is used for, who wants it. Another major factor in 1 kilo Gold bar prices (or, the price of any Gold bar, round or coin) is supply. The Gold found in PAMP Suisse Gold bars and other Gold bar brands, jewelry and Gold coins is rare, and is getting rarer: Gold discoveries have dropped over the last 20 years.
Buy Gold understanding that it behaves like a commodity and a currency.
The Gold in PAMP Suisse Gold bars or Gold coins is a commodity. The Gold you find in large Gold bars fits the definition of a commodity: It is something of value that is the same quality across the board, produced in large quantities by many producers (for example, diamonds which are also mined and valuable, cannot be considered a commodity because each individual diamond is unique and varies in quality). The Gold in a 1 kilo Gold bar, once fabricated and assayed, is the same no matter what brand it is: Even though unique features and reputation may set different brands apart, the actual Gold is the same. Gold found in Gold bars has also been a currency for much of history, and still behaves like a currency: For example, it has a high negative correlation with the U.S. dollar, where typically one goes up while the other goes down.