American Express: Spend $100 or More, Get $15 Back @ David Jones Motors

Offer is limited to one credit per Card to which the offer is saved and only spend on this Card counts towards the offer.
Excludes transactions where you do not spend directly with your Card to which the offer is saved, in-person at David Jones. Offer valid at New Zealand locations only. Excludes online purchases.
Excludes transactions made through a third party establishment or payment processor.
Credit is not redeemable for cash or other payment form.
Credit should appear on your billing statement within 5 business days from qualifying spend but may take up to 90 days from the offer end date.
Credit will not be applied to your Card Account if your Card has been suspended or cancelled.
Credit may be reversed if your qualifying purchase is refunded or cancelled.
Full Offer Terms available here.