shipping question

tonysbricks · 2013-05-15T04:03:27.000Z

Went to USPS to ship my first sale. I used a walmart box and the guy wouldn't give me the option to ship priority. I had to pay $40 for express (lol) or $10 for ground. I went with ground and contacted my buyer to let them know what was up. The cost calculator doesn't seem to agree with this nor does their FAQ. For future reference should I be able to ship priority mail with my own boxes when their boxes are too small?