Scrapette 
I have attended auctions at a State Hospital and all the drives up for auction had been punched with the boards on don't know about degaussing. If I remember correctly a gaylord of punched hard drives went for 1,800 - 2,000. I looked at some of the drives and the punch looked more like a dent wasn't much damage but they weren't going to spin up.
This company has data destruction down and I think I can deliver similar results with my 8lb sledged and a punch.
On-Site Mechanical Destruction - $5 to $10 per hard drive
At your business or at @@@ we will destroy your hard drive on-site. We remove hard drives from computers and place them inside a specialized machine and a conical punch inside the unit delivers a staggering 12,000 pounds of hydraulic force, causing catastrophic trauma to the hard drive’s chassis while destroying its internal platter. Our machine is transportable We can bring this service to your office. Cost is $5 if the hard drive is removed or $10 if we have to remove the drive.
HD Crushinator
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