It seems that unless you use one of the more common, cheaper brands (S26, Heinz) the discount pharmacies are the way to go.

We use Nan HA - it's usually $27 in Coles, but was on special for $23 this week. It's usually around the same price in BigW. However, it's $22 at the discount pharmacy closest to home and $21 at the one that's 20 minutes away. Seems to be about $24-$25 in most regular chemists. It's certainly worth keeping an eye open for specials, but they don't seem to happen that often.

BW