Depending on the class you choose, the cost of a South Vietnam trip will range from US $60 - 200 /person /day. It’s quite affordable since you won’t have to take flights when getting around the region, and the main transportations here are cars, buses, and trains:
Tight Budget: Standard Class (2* to 3* Hotels) - From US $60 - 80
Mid-budget Option: First Class (4* Hotels) - From US $100 - 120
Luxurious Experience: Deluxe Class (5* Hotel) - From US $140 - 180