HYPEON accepts Visa, MasterCard, American Express, Discover, PayPal. We do not accept checks. All prices are final. Due to high demand, market prices are always calculated according to demand and availability. We will charge your credit card at the time your order has been received and approved, after which you will receive a confirmation e-mail of your order. On rare occasions, items on our Site may be mis-priced. If an item’s correct price is higher than the stated price, we will, at our discretion, (i) contact you for instructions before processing the order, or (ii) cancel your order and notify you of such cancellation.