A free-shipping threshold is a discount with a condition attached, and it is frequently a worse deal than paying for delivery. Whether it is worth reaching depends on one number: how much you have to add to the cart versus what the shipping actually costs.

The rule

If reaching the threshold costs more than the shipping fee, pay the shipping. It sounds obvious and it is routinely ignored, because the threshold is presented as a saving rather than as a purchase.

Where thresholds are genuinely good

Retailers with no minimum for members. Beauty retailers, where small high-value items make thresholds easy to reach without padding. And furniture retailers charging per order rather than per item, where consolidating into one order is worth far more than any code.

Where they are traps

Marketplace sections where the threshold applies per seller, not per order. Large-item delivery quoted separately from the parcel threshold — reaching the parcel threshold does nothing for a sofa. And fashion retailers where the return shipping on the padding item is charged back to you.

The one worth joining for

Free membership programs with no order minimum. There is no threshold to game, no padding to buy, and the saving applies to every order regardless of size.