Firstly the bars are being sold only a couple of percentage points above spot. This is a perfectly normal price for decent bars or coins in small sizes.
Secondly the 'blue dollar' concept refers to the fact that Argentines are restricted from buying more than a certain amount of US dollars. They pay much higher prices to buy dollars illegally. US citizens can buy as much gold as they like, and Costco is not an underground or illicit market.
Firstly the bars are being sold only a couple of percentage points above spot. This is a perfectly normal price for decent bars or coins in small sizes.
Secondly the 'blue dollar' concept refers to the fact that Argentines are restricted from buying more than a certain amount of US dollars. They pay much higher prices to buy dollars illegally. US citizens can buy as much gold as they like, and Costco is not an underground or illicit market.