ok... he is looking for people bilingual in english and besides he wants them graduated from college..
how can you say that 1,500 pesos would be fair??? Nobody with that characterictis will accept a job like that, and if someone does, he will be constantly looking for other jobs. I´m not graduated working for a US corp. and my salary almost doubles that.
Apart from that, you were wrong, the discounts that an employee has from the gross salary (bruto) is as follows:
11% for retirement (jubilacion)
3% health care (obra social)
3% law 23,568 (related to retirments and pensions)
Total: 17%