Joomla Virtuemart Pre Order is a spectacular add-on that benefits the store customers to place an order in advance for products which are yet to be released or have no inventory i.e. zero. This extension will help users to publish products in their store before they become available to customers. Such type of logics helps to understand the market demand or buyer's choice. Since the inventory cost is zero so it is very economical way to understand the market by launching Product PreOrder booking.