The Postal boxes are great if what you are selling fits nicely into them .They were never much of a blessing for me . When I was selling on ebay , seemed the boxes were always too big , or too small , or wrong shape . I was constantly going to stores getting boxes of various size and shapes . Many times I had to take a box and cut it down to size to make certain items fit to try and cut down on weight . Also when I was selling , the Postal Service quit making tape available to its customers . It has been a while since I have sold anything on eBay , so maybe the Postal Service is furnishing tape again .