I always use the USPS because there are many offices in a relatively short distance, they seem less expensive than UPS or FEDEX, they suggest the least expensive way to ship, they don't want to know what is in the box except if hazardous or spoilable, and, and I may not be right on this, but if something gets monkeyed with they have guys & girls with badges, guns and warrants to look into it. I also ask for payment by USPS money order. Just me and one of the few thinks I like about the Federal government.