How much does it cost to join a tour group to Vietnam?

If you want to go to Vietnam without a tour group, everything is 7 days in Vietnam. If you just want to go to Vietnam, you can travel freely. This is more flexible. The daily price of the air ticket also fluctuates. About 2, round-trip air tickets are used to stay for a few nights. What are the standard meals? What are the standard local car and transportation costs? It is cheaper than teaching to travel with a tour group. There are also about 6,5 tours in Vietnam for 7 days without self-funded projects and shopping shops.