Saw this today in-store at JB Hifi Macquarie Centre. Pretty good deal for a just released phone. Even cheaper with discounted gift card. Looking to buy the XL for the missus. No experience with trade-ins - what do they do with an old smartphone?
6.5% discount on eGift Card for AGL Rewards Members - thanks PoRKroLL. https://www.ozbargain.com.au/node/458828 Note it takes up to 3 days if you pay by bank transfer. Pay 1% credit card fee and the eGift Card is emailed within a couple of hours.
Edit 2: Appears to be nationwide. Thanks ndwalters and Rowen.