In some rare cases, you may have a reasonable need to cancel your order. If you believe this is the case, you can call us during our operating hours. At that point, we may approve the cancellation. After we issue a confirmation number, the prices are locked in for both sales and purchases. We take the risk that the market price will change to a price that is less favorable to us. Assuming this risk, we expect both those who sell to us and those who buy from us to go through with the transaction, just as we are committed to doing on our end.