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Most sellers undercount shipping because they only count the postage label. The true cost of getting an order to a buyer includes the packaging — padded envelope, box, tape, labels and inserts, typically $0.50 to $2.00 per order — and your own time packing it, which at a modest $20 hourly value makes a ten-minute pack worth $3.33. Add those to postage and a 'cheap to ship' item is often surprisingly expensive. This calculator builds the full true cost from your numbers, shows what share of the sale it eats, suggests a fair flat charge, and gives an honest verdict on whether free shipping is affordable for that item.
Postage is only half the story — packaging, fuel and your packing time all cost money. Enter the real numbers and see the true cost of shipping an order, what share of the sale it eats, and whether free shipping is quietly bankrupting you.
Completely — time is the most undercounted cost in small selling. If you spend 10 minutes packing each order and sell 300 orders a month, that is 50 hours of your life. Value it at what your time is worth and price accordingly.
A flat charge that covers your heaviest typical order's true cost, rounded to a clean figure like $4.99 or $6.99. Charge the same for everything and you simplify checkout; just verify no product line exceeds the flat amount.
When the true shipping cost is under roughly 15% of the item price, or when you set a basket threshold above your typical order so the free shipping is funded by bigger carts. Otherwise free shipping is a discount you never labelled.
Every tool answers instantly from our own knowledge and calculators — no AI wait, no account. Want the deeper, personalised version? Each has a $2.95 full report.