Thanks for the replies guys!    I'm not looking to make profit buying and then selling, I'm more like searching for a way to keep money safe from devaluation and inflation rates, and a way to be able to exchange it in another country without loosing acquisition value.    As well as a reference price so the local dealers won't rip me off.    Taking the market's gold price for example, am I able to know how much I should pay to a local dealer in country A (so I don't get rip off with the price) and then go to a local dealer in country B and sell it so I get approximately the same amount of cash (after currency exchange of course)?    I know, I know, it would be easier to just make a direct currency exchange... but what if the currency exchange severely damages your acquisitive power, or currency exchange is controlled or banned altogether in country A.