Yes that's free. But I also use acid-free plastic to seal any vintage collectibles prior to them going into the box. I generally seal anything I'm sending against it possibly getting wet. (Ever have the P.O. leave a box outside in a rain or snow storm?)
Glass and breakables are double-boxed. Plus lots of tape, printer ink, etc. And also my time. Carefully packing items is the most time-consuming part of ebay -- I really work for "peanuts".
I really work for "peanuts".
Yeah, but at least you get the peanuts.