Send them off for easy profit with little investment only if you are satisfied that your customer data is secure. Not to infringe on the buyers here, but nothing leaves my warehouse without first being wiped, degaussed or shredded. My customer decides which method they want, which can be painful when I'm dropping 4TB drives in the shredder. But customer satisfaction is my key to success. If you were able to wipe drives, my method is this:
I first test using a Wiebetech Drive Erazer ($200). Anything with bad sectors or poor disk health goes into the shredder. I then throw them in a docking station ($15) and do a second test using HDD Guardian. You can also use Seagate tools. Again, anything with bad sectors or poor health gets tossed in the shredder. Finally I use an Aleratec 1:11 Copy Cruiser, which copies but also does DOD and Secure Erase wiping. This machine comes in different sizes and prices and is not cheap $500+. Find a used one if possible. Once the process is complete you can put the drive back in the docking station and confirm that it is wiped. I guarantee my method for my buyers with a warranty and have yet to have one return. I wipe about 500-1k drives a month and shred about twice that. The Wiebetech can also wipe the drives to different standards. Hope this helps
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