Pre close order is a process in which a customer makes a purchase and the vendor pre-completes the transaction. The customers don't have to fill out a form or ask for any information, which saves them from being interrupted by any other salesperson.
One of the most common pre close order use cases is when you're buying something from an online website, such as Amazon or eBay. Basically, it's used to buy products that are sold by one merchant who has partnered with another merchant who will be fulfilling that particular order once it's been made.
When customers make purchases using pre close orders, they know exactly what their total cost will be without having to enter their payment details or wait for a confirmation email from the seller. This helps them save time and effort.