Here is a great item for ebayers,
Weigh your items and work out your exact postage costs with these professional scales.
This is an asset to home business that wishes to handle shipping themselves. This scale will save you time by not having to wait in line at the Post Office or Shipping Company. It will save you money and hassle by accurately calculating the shipping weight of your package. We personally use it to calculate shipping fees and print labels with the help of internet based shipping services. I never overpay or worst, underpay for postage. All of this from the comfort of our own home or business!