Use code:

PAY10LESS

A minimum spend of $75 per transaction applies.

The 10% discount is on item cost only and does not apply to postage costs.

The total discount is capped at $300 per transaction. Limit 2 transactions per person during the Offer Period.

Multiple items may be purchased in one transaction (up to a maximum of 10 items per transaction).

Full T&Cs:

https://pages2.ebay.com.au/Buyer_coupons/pay10less