I have and its still wrong sometimes. I take every package to USPS if
shipping isnt priority mail. Also, recently, they have been charging me
$3.50 for postage but my buyers $1.21 based on weight and shipping
calculation using USPS first class packag...
This has happened to me as well. I no longer use there estimated but
individually put it in based on weight now. The have been way off on
mine as well. Im am unsure if they are factoring the weight is higher
with packing materials. For instance a box...
