Fantastic way to get your hands on 2 x WD 8TB Red drives cheaply.
The WD enclosure is user serviceable so they expect and allow you to remove the drive from this unit unlike the single MyBook 8TB which requires you to break the enclosure.
You can of course use this as intended as a very large encrypted 16Tb USB 3.0 drive. Or 8TB using RAID 1 (Mirrored).
On the WD Store Front Page about midway down is a box on the left that says "Sign Up for WD Specials". If you enter your email address and click "Sign Me Up" you get an email sent to you instantly with a unique 10% off code.
Despite WD making the drives they seem to be out of stock for long periods of time with this drive just coming back into stock this morning after a long period away.
Unique 10% Code emailed to you also stacks with WDSTORECPN giving a fantastic prince of £377 for 2 x 8TB Reds