There are no stores currently selling clear hard drives by any major manufacturers as of November 2015. Western Digital marketed the Raptor X in 2007. The Raptor X featured a transparent window, but it was an internal SATA drive and required a see-through case to see it in operation.
The Raptor X provided somewhat limited storage capacity that topped out at 150 gigabytes, and it retailed for about $300. Stores such as Staples and Best Buy carried the drive, but Western Digital discontinued it and shifted its attention to larger storage capacities and solid state drives.
Clear hard drive enclosures and cases are also difficult to locate, although Japanese retailers Ami Ami and Play-Asia currently sell the see-through Cyber Gadget Scratch Guard cover for PS4 hard drives in clear, red and blue. These transparent cases are available to U.S. customers by visiting AmiAmi.com or Play-Asia.com. Alibaba.com also offers transparent cases for X-Box drives.