its been awhile since you posted this thread. If you are going to resell and do some sort of warranty with them me advise would be scrap them. I have a bunch of those model machines at work and they are slow as molasses, capacitors are always bulging. Older machines actually work better then this model did. That being said. If you have no obligations to the new owner then you could probably easily sell them for $40-50 a pop, once they are imaged. If you dont have imaging software go to acronis.com and download their trial of migrate easy and start cloning all the drives.