You do realize that someone like Midway has to account for and schedule pickups for primers and powder in batches that are limited in size. One UPS truck can't take all of a days shipment. Takes time. Sure different vendors will charge differently as their labor and overhead are different.The last two cases of primers i bought from two different vendors were shipped in the manufacturer's original packaging only, only had a haz plackard on it.
Still charged$30 from one vendor $35 hazmat from the other.