Dd1 starts year 3 and dd2 starts prep. I have bought NOTHING.
Dd1 only needs a new sports uniform as her formal uniforms still fit. We buy 1 sports uniform and 2 formal uniforms- they wear formal Mon, Tues, thurs and sports wed and Fri. Oh and she needs new shoes (lynx black sneakers).
Dd2 will need 2 or 3 sports uniforms as she wears it every day. Plus the same shoes as dd1.
Bag wise we just buy from Kmart/big w. Same with lunch boxes. Every classroom has a fridge and they prefer no insulated lunch boxes as they take up too much room.
Stationary and books we just hand the list into a local newsagency and they do it all for us. Probably more expensive but it saves me running all over town for specialty items like text books etc.
I am lucky that my grandad offers to pay for uniforms every year (this year he is paying for dd2's uniforms as she needs more than dd1).
I like that our school does a drop in day the week before school goes back where kids can take all their books etc in, see what class they are in and meet the teacher etc so they aren't having to carry a big heavy bag in on the first day.