Accessory boards go in with motherboard pile. Most motherboards are integrated so there aren't many pci cards anymore. Hard drives are pulled before I get them. Some companies I contract with will pay me to disassemble and destroy the drives. I sheer the platters into 4 as part of my contract and get paid per hard drive. These platters just go with the aluminum pile after that.
Hard drive boards have good value. Last contract I had, 24 hdd = about 2 lbs of boards. So that was around $20. So, yeah, that would add some value to my quote.
So, $20 for hard drive boards, Each hard drive would yeild about 1 lb of aluminum and stainless so that would be (24 @ .50 = $12)
OK. so we have... hard drive value of $32 plus my original $200 and we will add a little for missing memory and/or processors.
$250 / 24 units = $10.40 / pc.
Yeah, I guess there's money to be make... not saying I would pay $7 each, but there is money there.
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