When a listing says free shipping, the carrier still charges someone. Usually the seller pays the label and recovers that cost through the item price, a higher basket value, or a smaller profit. To compare offers properly, keep buyer-paid shipping and your actual delivery cost as two separate numbers. Otherwise a change to the listing can appear to create money simply because the spreadsheet moved a cost out of sight.
Compare equal customer totals first
Consider an item priced at $30 with $5 shipping, versus the same item priced at $35 with shipping included. Before buyer tax, both bring in $35. With the same materials, labor, packaging, and shipping label, their order economics are approximately the same under the modeled US fees. The transaction and processing percentages include charged shipping. Moving $5 from the shipping field into the item price does not by itself remove that portion from those fee bases.
Then test the real alternative
The meaningful comparison may instead be $30 plus $5 shipping versus $30 with shipping included. In that case you have reduced revenue by $5, while the label still costs money. Some percentage fees fall slightly because the customer pays less, but the decrease in fees is much smaller than the lost revenue. Enter both scenarios rather than assuming a higher conversion rate will cover the difference. Improved conversion is a hypothesis to evaluate with actual shop data, not a calculator input that should silently be treated as certain.
Allow for different destinations
A single average label cost can be useful for planning, but it hides variation. Model a nearby shipment, a typical shipment, and an expensive domestic destination. Include the packed dimensions and weight you actually use when obtaining carrier estimates. An unusually large box can change the economics even when the item itself is light. If a low-priced product survives only the cheapest postage scenario, the listing price or shipping policy needs more attention before you scale it.
Packaging belongs beside postage
The shipping label is only one part of sending an order. A box, protective wrap, tape, printed labels, and inserts may each be inexpensive individually, yet recur on every shipment. Enter those consumables under packaging per order. Keep materials used to make each item in the per-item field. This prevents a two-item order from being charged for two full boxes when it actually travels in one parcel, and it prevents the reverse mistake of allocating only one product's materials to a multi-item basket.
Discounts can disturb an included-shipping price
If postage recovery is embedded in the item price, a percentage item discount reduces that recovery too. A 20% promotion on a $35 included-shipping item cuts revenue by $7. A 20% item discount on a $30 item with a separate $5 shipping charge reduces revenue by $6, assuming shipping is not discounted. Both may be valid offers, but they are not identical. Set the calculator's item discount and shipping charged fields to match the offer rather than reducing the whole order by an improvised percentage.
Build a shipping decision table
- Compare the current offer at its actual customer total.
- Test typical and expensive shipping-label costs.
- Include packaging and any handling labor.
- Run the discount scenario you are likely to advertise.
- Check a multi-item order using one shared parcel where appropriate.
The best shipping structure depends on the product, buyer expectations, and delivery pattern. Clear arithmetic helps you choose deliberately without pretending that one shipping label has become free.
Put your own numbers beside the example. The calculator includes labor, shipping, fee bases, quantity, and Offsite Ads.
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Fee references: Etsy's official fee overview, payment processing schedule, and Offsite Ads rules, checked November 3, 2026. These examples describe US sellers receiving USD through Etsy Payments. Business assumptions are illustrative, not a forecast or tax advice.