one thing I love about Sydney are the array of chocolate cafes available (although, no Koko Black…yet).
There are multiple Max Brenner stores around Sydney. It sells fairly middle of the road chocolate, but there are a large number of items on the menu in terms of beverages and desserts, so there’s something for everyone. Unless (heaven forbid) you don’t like chocolate. And prices are definitely more reasonable than Lindt.
I’ve always found their chocolate a bit too sweet for my liking, but there are a couple of items that I like. These include the waffles, which come drizzled with warm chocolate and fresh fruit, and the Italian dark hot chocolate, which is thick, chocolate-y and not too sweet.

waffles with chocolate
numerous locations around sydney