On every item listing we show a stock level for "Quantity available for shipping today". This number is accurate, and specifies how many items are actually on our shelves and available to be shipped immediately.
However, more inventory is almost always available. If your quantity desired exceeds the number currently on hand, we are typically able to ship the entire order within one week. You can definitely place orders for items showing stock of "0". If you need to receive these items before a particular date, please contact us to determine if we can meet your needs. If you specify expedited shipping on a back-ordered item, the expedited shipping method will be used, however, it will not ship until the extra items are received (this can take up to 2 weeks, however, 1 week is typical).