A.L.
I did the same thing for my neice in Atlanta. It's funny because I assumed UPS ground would be much cheaper than the PO but I did not find that to be the case. Not sure if it matters where you're mailing from/to but I actually found the PO to be a little cheaper. Also... when my sister comes to visit she packs an extra bag to take home with clothes. That was before you paid for bags on airplanes but even still... it would be less than mailing!