Online screw-up
Unfortunately, nothing on the website precluded or prevented me from specifying a PO Box as the delivery address (where I live the PO will not accept shipments with a street address) at the time of my order. When I got a message from UPS that they couldn't deliver the package, there was no way to update the address on the UPS website. Since the balls were needed for an event two days later, I called and arranged for a duplicate shipment overnight air. When I returned the no-longer-needed original shipment for credit, I received only partial credit, so the balls ended up costing me 1.5 times as much as they should have.