SIEC is the cheapest by starting from 155$ pw with no enrolment fee. Total of 3720$ for 6 months. So you can come for a 1 year course by depositing only that 6 months tuition.CASS is the quality one, costing 180$ pw with evening and morning classes, so timetable is quite flexible if your brother wishes to work while studying. The charge 200$ for enrolment fee and 150$ for material fee on top of the tuition.
SBTA is quality but cheap one costs 160$ pw, but no evening classes and charge 200$ for poor attendance or coming late to the school.
Usually those prices are for the students, coming through our Agency, a kind of a promotion or a discounted price. On a school website, it says at least 350$ pw. So drop your enquiry to admin@studyinSydneyAustralia.com.au or firstname.lastname@example.org . Good Luck