Hmm, I seem to have had a different experience than those above - although this was with the old study design so maybe things have changed? I thought he was a really great tutor when I was with him (2015). The lessons can be quite long and tiring (especially if you are in the morning sessions - 8AM) but definitely worth it imo. Honestly, I think it would be harder to find a better bio teacher in VIC. Possibly his teaching style is not for everyone?
The notes are also extremely thorough, however, there tends to be a lot of university-level content in those notes so you definitely don't need to know everything there.