There are 2 options:
1) We do not charge you for any out of stock item. If your final bill is lower than your checkout amount due to this, we automatically process the refund upon delivery by cash.
or
2) We will offer a replacement – When the original item is out of stock, our rider will call you and offer you a replacement item that you can choose to accept or decline. If you accept the replacement item, you will be charged on its full price instead of the price of your original item.