Different dealers have different procedures when it comes to locking in a price. At JM Bullion, when you add products to your Cart, the product prices are “fluid” and will continue to change until you advance to Checkout. Once you advance to Checkout, your prices are locked in and displayed on the right side of the checkout form. These prices are final, and are held for 10 minutes while you complete the checkout process. If you take longer than 10 minutes to complete the checkout process, you will have the option to approve the new, updated prices to finalize your order.