I need a simple mod that will allow customers to pay funds down on a product to secure it for a set time. The site admin can set the amount of funds needed to reserve and extend the reservation per product or globally. After all is paid the customer can then purchase the item. The admin can set the rules on how long an item can be reserved and decide if to cancel the purchase. The admin can decide how much funds the customer can get back (if any) if the purchase is cancelled. The customer is alerted when the reserve date is near and asked to add more funds or make the full purchase. Both side get alerts to the product status.