Due to the nature of the electronics industry from time to time products will be unavailable without notice especially during the Christmas season! although we endeavor to stay ahead of the curve this is not always possible and Substitute Products may become available. We try to keep open and honest communication with our customers and if you were to make an order and an item a Substitute Product is required we will contact you within 48 hours after the order has been placed (via e-mail or Phone ) if a Substitute Products of equal value and specifications will be used in place of the original stated product to check that you are happy to proceed with the order considering the slight change, if you would prefer to wait for the item to be re-stock or cancel your order. As an example the EW631 Optoma projectors specified with our ParkView packages has become end of line and will be replaced shortly with the new model EW635 which offers the same features and benefits of the original plus some cool extras! When this change becomes permanent we will update the ParkView packages and add a link to the full specifications of the new model of Projector.