Let's do some maths. Scenario, in Poseidon normal work day. - one day 4 clients minus expenses should bring back 3.200 baht plus tips easily 5,000 baht. Assuming work 22 days = 110,000 baht that's a senior management salary (factory worker is 9,000). The above assuming is conservative and from the horses mouth. Overseas got to take more than 10 clients per day, away from family, risks of human trafficking or sex slavery etc etc. With record number of foreigners coming into Thailand (23 mil in 2012 and climbing) there's no shortage of customers. So no need to leave Thailand.