Okay here is my experience with Midway USA shipping
I live 1 hour east of Midway USA. They seem to always use FEDEX Smartpost to ship. When I order anything for delivery, my package goes from Columbia MO to Kansas City Mo by FEDEX. FEDEX then drops it of at the USPS center, USP in KC then ships t to the USPS center in St. Louis. St Louis USPS then ships it out to me. So if I'm NOT in a hurry, I'll let them ship it to me. If I need something right away, I'll make the 2 hour round trip to go pick it up.
I miss the days when the USPS had a distribution center in Columbia, Mo. Things would go there then straight to my local post office.