Dana’s tip for anyone who ships things regularly: the post office counter rounds your package up to the next full pound, and that adds up fast over time. Weigh it yourself and print your own label online instead — services like Pirate Ship (free) or USPS Click-N-Ship let you enter the exact weight and pay only for that. A cheap digital postal scale (no specific model named on air) is all you need at home to get the real number.