You can pick up the 16TB Western Digital My Book Duo external hard drive for $499.99 at Best Buy's eBay store right now, offering you a savings of $100. While it's currently out of stock at Amazon, the price is matched there too. This deal is only good for one day and is also available at the main Best Buy site.

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Western Digital 16TB My Book Duo

This massive external storage device has enough room for all your files and is $100 off for today only. It supports USB-A and USB-C, is RAID-0 out of the box and can be used as RAID-1 I you prefer, and has 256-bit AES hardware encryption.

$299.99 $599.99 $100 off

It has a massive storage capacity, with the ability to increase it up to 20TB. It's RAID-0 ready and has two WD Red drives inside which are optimized for NAS and RAID situations. There are two USB 3.0 hub ports which can be used to connect accessories like card readers, keyboards, mice, additional storage and more; it also comes with 256-bit AES hardware encryption and password protection to keep your data secure, along with auto and system backup features.

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