Bought these intending to mine with them and found out how high the energy costs would be and decided it wasn't worth it. They are undervolted from 1.081v vs 1.21v. They are basically brand new and the warranty has not been registered. I am interested in selling each for $205 shipped(minus $10 if you buy both) or trading for an 15 inch laptop. Paypal Only(Non-CC) Shipping from 94085 California via USPS Priority(w/ tracking and insurance.