Shipping might kill this deal if ordering just 1 but if you after more then, would be good.
$54 at Harvey Norman.
SAMSUNG 64GB PRO Endurance microSDXC UHS-I/U1 Memory Card with Adapter, Speed Up to 100MB/s (MB-MJ64GA/AM)
Transfer speeds up to 100MB/s
Designed specifically for video monitoring cameras (dash cams, surveillance & security cams, CCTV, body cams, etc.)
Up to 17,520 hours of 4K and Full HD (1080p) recording and playback
Reliability Built to Last - Water-proof, Shock-proof, Temperature-proof, X-ray-proof, Magnetic-proof.
Shipping increases by a small amount as you add more. So a single unit: $15.88 shipping, 2 units = $19.92, 3 units = $22.27.
You might be better off buying from Amazon if purchasing multiple units, as it's $28.29 per item and it will be free shipping if you have Prime and are spending over $49, and get slightly more cashback out of it.