Ebay offers Refurbished Seagate Exos CMR 22TB 3.5" Internal Hard Drive for $258 (reg $400) with free shipping.

Product Description:
Powerful performance with proven technology—Seagate’s ® Exos® drives are built off the platform that’s shipped millions globally and deployed in leading cloud service provider solutions—making them the most sought-after drives in our datasphere. Designed with the highest rack-space efficiency and protected with Seagate Secure, Exos offers extreme market-leading capacity, earning customer confidence by delivering trusted peace of mind.

• Maximum Storage Capacity for Highest Rack Space Efficiency
• Market-leading 22TB HDD offering the highest capacity available for more petabytes per rack
• Highly reliable performance with enhanced caching—making it the logical choice for cloud data center and massive scale-out data center applications
• Hyperscale SATA model tuned for large data transfers and low latency PowerBalanceTM feature optimizes watts per TB
• Maximize total cost of ownership savingsthrough lower power and weight with helium-sealed drive design
• Proven helium side-sealing weld technology for added handling, robustness, and leak protection
• Digital environmental sensorsto monitor internal drive conditions for optimal operation and performance
• Data protection and security—featuring Seagate Secure for safe, affordable, fast, and easy drive retirement
• Proven enterprise-class reliability backed by a 2-year limited warranty and 2.5M-hr MTBF rating