UK's top gold fund manager: 'I would buy gold at almost any price'

``I would buy gold at almost any price -- as long as the fundamentals are strong. Gold has been incredibly strong for most of the past 10 years, and I see that trend continuing. It is easy to look at the gold price and say well it used to be $250 an ounce and now it's $1,700 an ounce, but the costs involved in mining gold have increased. You have to look at the relative margin. If costs were still low but the price was high then I would view it as expensive and unsustainable.''