Credit: Anwar Hussein/

The third heir to the throne has been living the life of a commoner while in the United States, -- replacing state dinners with $6 breakfasts, postpub "street snacks" and Walmart runs!

In the early hours of Oct. 16, while bar hopping on a break from his helicopter training in El Centro, Calif., Prince Harry ate tacos from a food stand outside a bar, Jimmy O's, in nearby Del Mar.

Later that morning, he ate bacon and eggs at Pipes Cafe in Cardiff-by-the-Sea.

The tab? $6.45! "He stood in line like everyone else," a source tells Us Weekly of the British royal, 27.

But his most unroyal act? He did his own shopping at a nearby Walmart! He loaded his cart with Coke, pizza, bananas and beer, a witness confirms.

What an average bloke!