Agree, but the entire world is its own challenge. Shipping overseas,
customs, payment, claims can get messy.
Agree, but only if it will fit in a USPS Flat Rate Box. Finding good enough shipping boxes and internal baffling so larger and/or odd shaped or heavy stuff, packing to arrive undamaged is a HUGE pain.
If you're going to sell on ebay, it's best to have all the materials ready to go. I save boxes, bubble wrap, packing peanuts, foam, air packs, baffling that I get when we buy stuff off Amazon, ebay, other places. I just keep it neatly stacked in the basement.
It saves you a ton of hassle and money. If you don't have some basic materials set aside, you're going to have to pay through the nose for materials at Staples or Wal-Mart AND have to drive there. And stores really don't save packing materials, so getting them for free is a hassle.
Also, packing it up before listing the item on ebay lets you put in the exact weight and dimensions, so the customer will pay the full shipping price. I bought a small scale for $10. And I print the postage straight from the ebay app which gives you a discount.
Plus having a wide range of box sizes available will save you money on shipping. Sometimes the flat rate boxes make sense if the item is going across country. Otherwise it might be better to use a regular box and save money. The USPS will let you bring some of the flat rate boxes to your house to have on hand.