There's a guy who is selling a 6700k for about $80 less than the price of a new one, problem is I don't know if is it a good idea to buy an used unlocked processor, second thing is I'm currently waiting for a promo which is coming in about 10 days in my country in order to buy the other parts so I wouldn't have a way to test if the processor works. Third is the price, I don't know if the asking price is good.