Freight charges are F.O.B. our various distribution centers or drop ship point of origin (F.O.B. Manufacturer). All charges are prepaid by Modern and added to your invoice. Modern utilizes several shipping companies to find the most expedient and cost effective way to ship your order. Most common methods include FedEx and UPS ground services. Shipments exceeding FEDEX or UPS limits are sent by a trucking company available in your area. If you have special delivery instructions, please let us know at the time of your order. Next Day Air and Second Day Air services are also available upon request. Note: Materials defined by federal ICC regulations as hazardous (such as rocket engines) are subject to freight carriers' hazardous material surcharges, in addition to regular shipping costs. Modern will prepay all freight charges and add the actual amounts to your invoice. For example, if $50.00 is estimated for shipping and actual cost is $30.00, then you will only be invoiced $30.00. To estimate shipping charges, add an estimate of 10% to the total order amount for East Coast customers and an estimate of 15% for West Coast customers. Again, this is only an estimation.