I'm sorry I didnt know we were talking about unqualified and illegal TEFL's working with fake degrees.

The OP said qualified teacher, which in that case, my comment stands.

And your friend obviously does not know what 'real' teachers do or make. I can think of at least 6 schools that offer wages in that bracket. (plus of course housing allowance, car loan, bonus, flights, shipping, medical etc)

For any teachers who wish to get into the international schools (and we are talking schools for 50% expat kids and 50% wealthy thai locals) then you need to register with recruitment agencies such as

Search Associates Teach Abroad: Search Associates
Council for International Schools Council of International Schools (CIS)
International School Services International Schools Services (ISS)

plenty more information on those pages above.