LASTDAY
Afterpay sale is finishing today which gives you up to 30% off.
You can stack up the coupon code above (expiring today too) and also use cashback.
Cashback rate at time of posting is both 8% on Shopback and Cashrewards and 11% on Cheddar, although only Shopback have listed the coupon code on their site / app (but capped at $40)
I couldn't get the referral code to stack up with the current sale but worth a try.