Use this promo code on the cart page for free standard shipping on orders over $20 until Monday 19 Feb, 2024:

Free standard shipping for orders over $20 inc. GST, excludes bulk items over 20kg, oversized items, express delivery options, rural and overseas addresses. This promotion is for retail customers only. It excludes commercial customers with credit accounts or special price levels. Offer is valid until 19 Feb 2024