Gold is a commodity, a commodity where the (current) price is determined on the world market. This is where buyers and sellers of gold come together. The buyer issues a "bid" price and the seller a "ask" price. The price between 'bid' and 'ask' is called mid-market or spot price.  Precious metals are traded throughout the day on various international exchanges such as New York, London, Zurich, Tokyo, Sydney and Hong Kong. 

The price on the gold market is constantly changing and has a direct influence on the price of the gold market. Gold Coins and Gold bars. The products on the website automatically move in line with the underlying price fluctuations of the Gold price.  

As with all prices, the price of gold reflects not only the 'value' of the gold but also the 'value' of the currency. For example, when the dollar rises in price against the euro, it can happen that the price of gold falls in dollars, but rises in euros. The price change then reflects the 'weakness of the euro', rather than a fundamental change in the gold market.