I tasted this a couple of weeks ago in SYD. It was good, but overpriced.
A$66 is about USD$59, and for a few bucks more, I'd buy the real thing Lagavulin, or it's less expensive cousin, other Islay single malts.
No way will I spend A$66 on JW. FYI, I thought SYD duty free was very expensive vs other airports.