This offer entitles you to 20% off the pre-coupon purchase price (excluding postage costs) on Eligible Items when you checkout with Afterpay,
during the Offer Period, up to a maximum discount of $300 per transaction. Multiple items may be purchased in one transaction per code (up to a maximum of 10 items per transaction). Afterpay is only available for transactions not exceeding $3000.
No idea what items are eligible so good luck finding them
EDIT: Ok did some digging.. here are the search links by code:
AFWPL
AFWHB
AFWSN