US shopping · Checked · BetterBuyWay editorial
You are nearly at checkout when a message appears: add a little more for free shipping. It sounds like a saving. Sometimes it is. Sometimes you are being asked to spend $10 to avoid a $5 charge.
The calculation is shorter than the shopping list
Compare two totals: the basket you already wanted plus its shipping charge, and the expanded basket plus its new shipping charge. Use prices after discounts. Leave tax out only if you clearly label the comparison as before tax.
Extra checkout spend = added product cost + new shipping − original shipping.
If that number is positive, reaching the threshold increases what you pay. You may still want the added product; just call it an extra purchase rather than a lower checkout bill.
Example 1: the extra item costs more than delivery
Nike’s published US standard shipping for members is free from $50; below that, it is $5. Guests have different terms. [1] Consider a hypothetical signed-in member basket of $46 and an eligible $10 add-on:
| Option | Products | Standard shipping | Total before tax |
|---|---|---|---|
| Buy the original basket | $46 | $5 | $51 |
| Add a $10 item | $56 | $0 | $56 |
Delivery becomes free, but checkout costs $5 more. If you needed the extra item anyway, it may be reasonable to buy both together. If you added it solely to avoid delivery, the original basket was cheaper.
Example 2: an add-on can lower the total
Now consider a fictional store with a $50 threshold and $7 standard shipping. Your basket is $48, and there is a useful eligible item for $3. The original total is $55. The expanded basket is $51 with free delivery, saving $4 before tax while giving you the extra item.
The store and prices in this example are invented for arithmetic. The conditions matter: the item must count toward the threshold, and the selected delivery method must actually become free.
Example 3: a promo code changes the decision
A hypothetical $34 basket becomes $27.20 after 20% off. That is $6.80 saved on merchandise. If the discount causes a $7 shipping charge, the new total is $34.20: twenty cents more than the original $34 basket with free delivery.
iHerb says its free-shipping minimum is assessed after discounts, and eligible delivery methods and basket restrictions matter. [2] This example is not a claim that a specific code works or that iHerb charges $7 for that basket.
A better rule for the last item
Before adding anything, ask whether it is something you would have bought soon anyway. Then check its price, any excluded items and the actual shipping line. You can calculate a break-even add-on price from the delivery charge you would avoid; spending more than that raises the cash total unless another discount changes the result.
Use our basket checker for recorded retailer rules, then confirm the order at the shop. The tool estimates shipping from stored policies; it does not read a live checkout.