Catch of The Day - Spend $50, Get $10. Spend $100, Get $20, Spend $150, Get $30 (as a Voucher)

This deal might be useful for anyone with ClubCatch, otherwise shipping bites into any discount.
Nothing worth screaming about, but useful if you were intending to buy something anyway.
Essentially 20% (if spending as close to those values as possible) in the form of a voucher to be used in a subsequent transaction.

Offer ends 9am AEDT 13.12.16
$50, $100 and $150 spend values excluding shipping charges.
Max 1 voucher per account. Vouchers will be emailed by 21.12.16 and will be valid until 31.01.17.
Voucher value must be redeemed in one transaction - unused value will be forfeited. One voucher redeemable per transaction and cannot be used in conjunction with any other coupon.
Voucher cannot be used towards shipping. Voucher not redeemable for cash.

Potentially combinable with the 10% up to $100 if paying with masterpass, as long as it's not considered a coupon.