All orders are processed within 1-2 business days prior to shipment. Shipping methods, including UPS Second Day Air and UPS/USPS Ground, refer to estimated transit times only and do not include processing time. UPS Second Day Air typically delivers within 2 business days after shipment, while UPS/USPS Ground typically delivers within 2–5 business days depending on destination. Delivery timelines are estimates provided by the carrier and are not guaranteed.
Carrier selection for ground shipments may vary between UPS and USPS based on operational efficiency. Once an order has been shipped, Grey Axis Research is not responsible for delays caused by the carrier, including those due to weather, volume, or other unforeseen circumstances. Shipping charges are non-refundable once the package has been transferred to the carrier.
