Gold is almost $2000 an oz. so 30 oz = $60,000.
Not enough to buy a luxury home.
And not enough to pay me to live in a luxury home in a islamic caliphate.
Those coins are worth more than the gold content.
“The coins weigh 845g (30oz)...”
It’s worse than you think. 845 g is only a little over 27 ounces of gold, since gold is measured in troy ounces, something this BBC “journalist” doesn’t seem to know. A troy ounce is 31.1 grams, or 1.097 of an avoirdupois ounce.