$116 $280
For Prime members only. Amazon has the Western Digital Red WD40EFRX 4TB SATA3 64MB Cache 3.5" Internal HDD for $116 with free shipping. Walmart has it for the same price with free in-store pickup.

Features a 6.0Gb/s SATA interface, 3.5" form factor, and is designed and tested for 1- to 5-bay NAS systems.
$116 retail: $280
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JoeTaxpayer
Ben's cred: 79
Posted 04/29/2017 at 08:30 PM PT
Posted 04/29/2017 at 08:30 PM PT
$137 now (yes I am a Prime Member)

Price & Comment History

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Western Digital Red Plus 4TB SATA3 3.5" Internal HDD at Amazon

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Western Digital Red Plus 4TB SATA3 3.5" Internal HDD at Amazon

Posted 08/04/2020 in Internal Storage
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Western Digital Red 4TB SATA3 3.5" Internal HDD at Newegg

Posted 04/23/2020 in Internal Storage
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Newegg

Western Digital Red 4TB SATA3 3.5" Internal HDD at Newegg

Posted 03/24/2020 in Internal Storage
$90 retail $125
Amazon

Western Digital Red 4TB SATA3 3.5" Internal HDD at Amazon

Posted 03/03/2020 in Internal Storage
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Western Digital Red 4TB SATA3 3.5" Internal HDD at Newegg

Posted 01/27/2020 in Internal Storage
$90 retail $125
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Western Digital Red 4TB SATA3 3.5" Internal HDD + 15% Back at Amazon

Posted 11/28/2019 in Internal Storage
NeweggFlash

Western Digital Red 4TB SATA3 3.5" Internal HDD at NeweggFlash

Posted 08/06/2019 in Internal Storage
$90 retail $125