Reseller shall present Dimestore Cowboys, Inc. (DSC) with a signed Purchase Order for each order placed with DSC. Purchase Orders may be placed by FAX or by mail. Verbal Purchase Orders and verbal changes will not be accepted. No changes to a given Purchase Order may be made after confirmation of order by DSC. Standard lead time on DSC products is customarily four to six weeks plus standard ground shipping time from confirmation order. All sales are final, including custom orders. There are no refunds, exchanges, or cancellations.