I have been teaching in Chiangmai for about 10 years now and my salary is now just above 50 k per month. I started back in the day at 28k a month. I cannot believe that even 50 k can be enough to live in Bangkok let alone 30k.
I agree with other teacher's comments, do not encourage these 'employers' by taking their paltry salaries. I realise that many people are settled here with Thai nationals and have children and these people may very well feel that they do not have a choice in dictating or demanding certain salaries, even if they are experienced esl teachers.
Thailand attracts a lot of very young newly qualified teachers who have had no experience teaching in their own countries they qualified from and many of whom are doing a really abysmal job of teaching their pupils. These qualified teachers are not here to stay but are in fact here to have fun, use their salaries on hedonistic activities then leave. These teachers are not too concerned about how much money they make because they are only here to have a good time. I feel that it is these teachers whom are lowering the basic salaries kingdom wide for serious long term teachers by accepting these low paying positions.
Qualifications certainly seem to come before age and experience and this is to the detriment of the pupils in Thai schools. For those teachers who have been here a while and are doing a good job and have furthered their education by doing a pgcei or a masters in education on top of their degrees, should leave Thailand and work in schools where their knowledge experience and qualifications are valued both monetarily and personally.
Another thing to note is that western teaching qualifications do not have a great focus on English as a second language learner and this too affects the children's education in Thailand as specific strategies are needed to teach them successfully.