I just received my first two purchases in the mail yesterday from
ebay!
One was 1,000 stamps, off paper kiloware that was carefully places in a sandwich bag, surrounded by thin cardboard stock and the folded invoice. The envelope was well taped on the outside.
The other was a smaller lot of a few stamps in a cardboard backed dealer card, taped lightly to the inside of the envelope with a thin cardboard front. LOTS of packing tape on the outside of the envelope.
Everything was well packed. They both used stamps on the envelopes. In fact, one of them basically covered the front of the envelope with lower denomination stamps from 30 years ago! That made it a pleasure to receive these packages, and would order from either of them again. The other thing that really impressed me was the speedy shipping.