The 2TB WD SanDisk Extreme Portable SSD recorded on Amazon priced at $529.00 & FREE shipping in the US. Lowest ever!
EDIT: Recorded priced at $399.99 for Prime members.
It's basically the same drive as the WD My Passport Portable USB3.1 SSD, in an IP55-rated rugged shell, offering speeds up to 550MB/s reads. It has the same USB Type-C port (USB3.1 gen2 10Gbps).
* ✈ International shipping available.