I will suggest you one reason to come to Viet Nam. It's culinary
BÚN CHẢ
Is it delicious? I think you will say YES. But is it expensive? I'm sure that no. You just have to bring only 5 or 7 dollars and you will get it.
How about this one? It is called 'BÁNH CUỐN'
It is very picky because of the tasty. But you will early love it.
These are some of famous food in Viet Nam. Please come here to try more.
The best wish and love from me to you.