Let's be friends! Just head to https://www.harrisfarm.com.au/pages/friend and sign up to receive weekly discounts and David Harris' market updates.
If you're shopping in-store, all you need to do is download or print off your unique barcode to be scanned at the register and you'll receive your discounts.
If you're an online customer, you have to make sure you apply the discount code (VEGIES) on the online checkout page.