All of our shipping is done via USPS flat-rate priority mail.
On average, up to 8 bars typically fit in the smaller padded envelope. Usually up to 40 bars can fit in the medium flat rate box.
If you would like to request another shipment method, please contact me and I will see what I can do. At this time, we only ship within the U.S. If you live outside the U.S. and would like to place an order, please contact me.