HAve a range of other products but I have only used the bulk nappies. The price is not the best for the top brand of nappies (Huggies), you can get cheaper at Woolies or Coles when they are on special, but it is convenient to get from Instant Supply in a larger bulk quantity. They do have different / cheaper brands, but I have not tried them as my little one easily gets nappy rash. I am not sure about delivery / shipping costs (I drive straight past them on my way home from the school run), so super convenient for me to just pop in when I need something.
Staff are great and very friendly. This store trades as "NappyLand".