These are good quality storage boxes, very thick plastic. They stack well and you can lock the lids on with a padlock or cable ties.
Normal price is $32 each.
A previous deal was 2 for $44 https://www.ozbargain.com.au/node/206970 but this beats that.
I recommend these - they will easily hold more than you can lift (you do lift don't you?).
Bunnings have the same boxes (without the SCA branding) for $18.89 if you are up for a price beat.
http://www.bunnings.com.au/montgomery-100l-heavy-duty-storag…
Regarding the Bunnings price they come up at $17.49 (my local store)-Caloundra