Delivery dates are estimated based on many factors. Your location in regards to the point were shipping from, influences the delivery time. Since we bring in most products from the manufacturer to our warehouse only once your order was placed, estimated ship dates are based on the manufacturers stock, and the time it takes for them to deliver it to us. This may vary to each individual manufacturer. That is why we send an email with an estimated ship date after the order is placed. Any extended delays in shipment would only be due to the manufactures delay in either restocking or delivering to us.