The Travel Maccas Guide: eat it or not, Maccas gives a good global price comparison.

In Nha Trang, Vietnam, this large meal is VND120,000 (USD5.10/AUD7.30)

• In Vietnam, unlike in Australia, the concept of “large fries” is apparently not interchangeable with “small fries”; it’s plenty.
• Orange juice option at no extra cost
• Self-serve sauces at no extra cost