Items in the last available item category are full price payment with a 50% refund if you send an email.
I've dealt with these guys before once and they were fine.
Communication takes a while and no change of mind refunds.
T&C https://www.autoelec.com.au/blog/autoelec-au-blog/bogof
I bought a winch available at winchworld at $1100 for $350, and a iroda 70 soldering iron for $30 down from $60.
Bargains will be specific to the ozbargainer but there is mostly tools/lights and small 12v accessories on there.
Are there a page with 50% refund T&C?
Found it: https://www.autoelec.com.au/blog/autoelec-au-blog/bogof