I absolutely agree that an accurate scale is mandatory if you do much shipping. I bought my 20 lb scale on ebay for $15-$20 (with shipping!) if I recall correctly. For me, that money was well invested; I no longer had to drive to the PO to have the package weighed, and bigger bonus-printing postage online saved me money! My scale paid for itself long ago :thumbup:
Make sure you have a "hold" button on it. It's very difficult reading the numbers when the box is covering them! ;)