I picked up a digi scale on eBay for around $10 new. It will handle up to 80 lbs in increments of 1/10 oz. I had the P.O. verify the weights a few times to make sure it was accurate. It has saved me $$$ on undercharging or overpaying for shipping. I print all my labels throught ebay/paypal. Also, If you have at least one package which is priority mail, the P.O. will pick it up. Even if you have 20 packages and only one is priority, they will grab them all, and its FREE. I almost never step foot in the P.O. anymore. You can schedule a pick up on the USPS website. It saves a lot of time especially if you ship daily.