Where to buy a dbl demagnatizer bulk tape demag.

I am looking where to buy a dbl demagnatizer for cd's. Its a (bulk tape demagnaizer). Does anybody know where to buy one.
Would a Radio Shack Bulk Eraser suffice?
if you want to demagnetize a cd, why not use a cd demagnetizer, such as bedini clarifier or furutech ?

personally, i think cds sound more digital after demagnetized. i own a furutech demagnitizer and haven't used it for a long time.