My calcs:
Seeing as we don't know what type of servers these are, I personally believe the $50-100k per figure may be a bit high, but I will run with the lower end of the figures.
500 servers x $50,000 original cost = $25,000,000
35% resale value x $25,000,000 = $8,750,000
Costs involved estimated at $1,000,000
Net = $7,750,000 minus purchase price of used servers
Not too shabby. I think we are going to see A LOT MORE of this after the Q drop is formally finalized.