There is no fixed salary amount but expect a range between 1000- 2000$ per month for a full time teacher. That may sound a bit hefty, but for the cost of living in Vietnam, the amount can get you a beautiful rented apartment with plenty of budget for food and saving. A part time teacher may be paid 18- 25$/ hour of teaching or a bit more depends on location he/she travels to and teach. Salary also depends on qualification and experience that I mentioned aboved.
If you interested in teaching English in Vietnam, you can vist following link for more information for your departure here
http://teachinvietnam.org/publicArea/Pr ... in-vietnam