What can I expect to pay for hard data drive destruction

I am in the process of pricing out what it will cost to have secure hard data drive destruction done on 15 computers plus multiple other backup tapes and cd’s. The company I have been working for is going out of business and needs to make sure that all of the private data it previously had on the computers is wiped clean before it is sold at auction. My job is to get the best quote for the job. To be honest, I didn’t know there was such a service out there and don’t really know where to begin looking. Any help would be greatly appreciated.

31 July 2008 | Technology