I think there's been a lot of bollocks written in this thread.
Only DJ Pat and myself seem to know the truth.
The only TEFLers who break 40K a month will scarcely see daylight, let alone the outside world.
If they are legal then they are chained to their shitty schools from 7.30 am till 5pm (not to mention all the other crap they have to do outside of those hours like marking and meeting the parents etc).
If they aren't legal then they're to be found charging all over the city from language school sweat shop to language school sweat shop for their 300B an hour.
The teachers I know who break 40K have to pack in some hefty after school hours in their private lessons to make that, while we gainfully employed sexpats are relaxing in the bars and shagging their "Tee Raks".