Storage boxes set of 3 $29 at Peter's of Kensington
You get 3 in the set and the sizes are pretty good. The thing will be how flimsy they are. But it appears that they are not just cardboard
"Made from printed, non-woven polypropylene."
But still not 100% sure how good that is
They only have one colour.
One not so good thing is the $25 postage to WA - it is $6 to central Sydney