This is unshuckable.
Best deal for 4TB portable HDD right now with free delivery.
Edit - free delivery is for everyone not just Prime members because item is over $39. Thanks bird380 and GordonR for pointing this out.
Also, AU stock so you don't have to wait for delivery from UK or US.
Don't forget Cashrewards.
Other slightly cheaper deals exist if you are able to pick up. For eg, at PC Byte if you can pick up at Auburn store: https://www.pcbyte.com.au/store/product/seagate-backup-plus-...
$125 + $9.90 delivery, also doesn't accept credit cards, also 1% surcharge if paying with PayPal or Zip Pay… so Amazon deal much better if you can't pick up.
Yes, there have been under-$100 deals on 4TB and 5TB drives but I have never been lucky enough to get them. They are out of stock or expire quickly.