Luxury at the gift level is about meaning, not just spend. A A$300 spa weekend a parent will actually take outperforms a A$1,000 watch that sits in the drawer. The strongest luxury gifts in Australia tend to fall into four buckets: a stay (Spicers, Lancemore, Halcyon House), a serious experience (degustation at a hatted restaurant, private tasting at a winery), an iconic object (Riedel Veritas decanter, a designer ceramic piece, a quality piece of jewellery if you know her cold), or premium tech that actually upgrades a daily ritual (Bose QC Ultra, Sonos, a serious espresso setup).
What to avoid: paying luxury prices for things they'd be happy to receive cheaper. A A$249 e-reader is great, but it's not a luxury gift — it's a tech gift. Keep luxury for partners, parents, milestone birthdays (50, 60, 70), serious anniversaries (10, 25), and weddings where you're particularly close.
Last-minute: a Lancemore / Spicers / Crown e-voucher; a degustation booking you make on their behalf. Hand-over matters at this price — a hand-written card and an in-person delivery turn an expensive thing into a gift. Every pick here is scored to rank actual luxury over merely-expensive.