Iran sells natural gas to Turkey and receives payment in Turkish lira, which are then used to purchase gold bars in Turkey.

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Ultimately, the particular card you choose also depends on how you envision your gas rewards credit card fitting into your payment arsenal.

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These are essentially presale of the physical commodity for an upfront cash payment and a guarantee to deliver the oil or gas at future dates.

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One of the main reasons for this is that after paying the minimum required monthly amount I still have other expenses in the form of rent, a car payment, utilities, grocery, health expenses, and phone, not to mention gas expenses that are continuing to climb.

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The bill would allow for the early payment of the winter fuel allowance to people whose homes are not connected to the mains gas grid and whose principal source of fuel is home fuel oil, liquid petroleum gas or propane gas.

BBC: Winter Fuel Allowance Payments Bill

Uswitch calculated figures for the BBC showing the difference between the average standard plans (payment on receipt) and the average online price among suppliers in the UK for dual-fuel gas and electricity bills.

BBC: Gas and electricity bills hide internet savings