These are the rules from ebay re 'Pre Listing'
Pre-sale Listings are those that advertise the sale of items that are not in the control or possession of the seller at the time of the listing. These listings generally consist of items that are sold in advance of a delivery date to the general public.
eBay does permit pre-sales on a limited basis, as long as the seller guarantees that the item will be available for posting within 30 days from the date of purchase (i.e., the day the listing ends or the date the item is purchased from an eBay Shop). eBay may also make exceptions and extend the 30 day deadline for other items such as event tickets, travel tickets and other similar items where the seller has paid for and owns the item but due to industry practice will not be sent the item until a later date. 
A seller who lists a "pre-sale" item on eBay must clearly indicate within the listing the fact that the item is a pre-sale item and a delivery date that indicates the item will be shipped by the 30th day from the date of purchase. Additionally, this text must be HTML font size 3 (at a minimum.) eBay will end any listing that is a pre-sale, which does not include this information.
eBay, at it's discretion, for special promotional events, may approve a 1st party manufacturer to sell an item outside of the 30 day Pre-Sale guideline so long as the 1st party manufacturer is supplying the actual item for sale. These exceptions will be made for certain promotions and must be approved by eBay in writing prior to listing items for sale that fit the exception above.
Such a policy ensures that buyers can pay for an item and still have the option to use eBay's feedback system, insurance programme and other protections.