Salaries for TEFL teachers vary hugely depending on which country you are teaching in and how much experience you have, along with your qualifications.
It is possible to earn between $39,000 (£25,000) to $60,000 (£38,000) as a TEFL teacher, although if you are looking for your first TEFL job you should expect to earn $22,000 (£14,000) to $39,000 (£25,000).
You should also keep in mind that the cost of living in many countries is much lower than in the Europe or The USA. A teachers rate can also depend greatly on the need of teachers in that area. The salary in Spain and Thailand are lower than the salaries in Vietnam for example as more teachers would prefer to live in Spain and Thailand.