I had items in my cart, but when I went to check out, they were gone! How does that happen?

Placing an item in your cart does not reserve it, since a product is not committed until you complete the checkout process and receive an order number on the confirmation page. An item can also sell out while you are attempting to finalise your order due to high demand. Please note that if there is a problem processing your order, you will be notified immediately. Failure to promptly respond accordingly may result in your order being cancelled.