14TB Western Digital WD Gold Enterprise Class 3.5" 7200 RPM Internal Hard Drive $240 + Free Shipping

Western Digital is offering a 14TB WD Gold Enterprise Class 3.5" 7200 RPM Internal Hard Drive for $240 with free shipping. The promo code WDGOLD can be used to get it for $239.99 at westerndigital.com. This seems like a solid deal for a brand-new, durable drive that should last for years in a NAS RAID setup. In comparison to refurbished drives, this is a much better option. The Golds and the Red Pros have the same 2.5M hours MTBF, making them appear quite similar in reliability. However, further clarification on the differences would be appreciated.