Seems like a really good deal. It's printed on latest catalogue so should be plenty of stock and nationwide.
Free delivery since it's over $50.00
I think Reject Shop usually sells them for $20 / 90 tablets.
Tip: Can add those cheap Keji A4 papers together with the free delivery.
Chemist Warehouse Wollongong store has them for $12.99 for 90. Near the checkout.