Signing up for Briscoes mailing list will give you a code for $10 off any order >=$50.
includes shipping costs (flat fee $6 delivered, $3 click and collect), so works out to either free delivery or an additional ~15% off if you can get your order as close to $47 as possible.
I have confirmed this code works as many times as you like IF you're fast enough, I split my $200 order across 4 $50 orders over 8 minutes according to the emails. However I tried the code again just now and it's saying it's invalid, so as long as you do them all promptly it should be fine.
Got some good savings in combination with their Black Friday sales. And as soon as the newsletter arrives I'll be unsubbing!
Edit: Might have been wrong about it including shipping.