Best bang for your buck (imo).
They teach well (regular quizzes, homework, topic exams AND mock trials) + help a HEAP ton with assignments which is all important for your internal ranking.
Prior to the HSC as well, they have free exam sessions (around 4 mock exams in total) with difficult HSC...
$30 a lesson for a 2 hour lesson (their website is PEAK HSC, not to be confused with the junior version PEAK Tuition)
discounts if you do all three sciences tho, but I believe you’re only Chem/phys