Wix shipping settings: why do mixed-cart rates combine?

Your UK shop sells small accessories alongside a bulky product. Each item looks correct when bought alone, yet the basket containing both shows an unexpected shipping charge. Before changing every price, compare the delivery profiles used by the two items. The useful question is whether your customer is buying one combined delivery or two separate fulfilment jobs. Write that decision down first. It gives you something concrete to compare with the checkout result and prevents a cheaper-looking rate from hiding an extra parcel you still have to prepare.

Do these products actually need separate delivery profiles? #

Separate profiles are useful when a product needs different destinations, handling or collection rules. For your own planning, sketch three sample baskets: an accessory alone, the bulky item alone, and both together. Beside each basket, record the carton or cartons you would use. Add the location holding the stock and the service you can actually book. A difference in product category is not, by itself, a reason to split the delivery promise. A difference in the physical route may be.

The Wix store setup guide separates shipping, local delivery and pickup and suggests profiles for groups with different requirements. Use that distinction when naming the service. A courier parcel and collection from your premises involve different actions by the buyer. If a large product cannot travel with the accessory, decide whether you will accept the mixed basket at all. Avoid solving a transport restriction merely by charging more for a service that cannot carry the goods.

Where do you put an exceptional product without moving everything? #

The Wix Academy delivery-profile walkthrough starts in Settings, then Shipping, delivery and fulfillment. The general profile holds your existing items and rates; additional profiles hold selected items with their own regions and options. Make a shortlist of the exceptional products before you create a profile. Keep their stock codes in the shortlist, so you can identify the intended item even if the catalogue contains several similar names.

A practical rollout starts with the accessory basket that already works. Save its visible options and its destination. Next, assign only the exceptional item to the new profile and repeat the accessory test. Then try the exceptional item alone. This sequence shows whether your change stayed within the intended scope. It also gives you an ordinary basket to revisit later when someone changes a shared rate. Do not move the entire catalogue into several new profiles simply to diagnose one expensive item.

Wix assigns new products to the general profile automatically. Treat profile assignment as a catalogue task: whoever publishes a new bulky item should also review its shipping treatment. A useful internal record has the stock code, intended profile and reason for the exception. That record helps distinguish an intentional general-profile assignment from an item that slipped through during product creation. Keep the check beside your product-launch checklist rather than expecting the person printing labels to discover the mistake after an order arrives.

What changes when the customer puts both profiles in one basket? #

The official profile guide says matching option names are case-sensitive. Depending on your chosen calculation, separate matching rates are added or the higher rate is used. Shared rates are linked and applied once, even when separate rates normally combine. Those are three different configurations. Compare them with the packing decision you made, rather than assuming that two profiles always mean two charges.

Do not use the table as a recommendation to choose the smallest total. A single customer charge can be a deliberate subsidy, while two charges can correctly reflect two parcels. What matters is that the outcome is deliberate. Ask the person preparing the order to identify the intended cartons from the mixed basket without relying on its shipping total. If that person cannot tell whether to combine the products, the checkout setting has not yet become an executable fulfilment instruction.

Can a shared rate change the other profile unexpectedly? #

Wix documents that changing a shared rate changes every profile using it. Before editing one, list the products and destinations reached through that rate. Use the existing accessory basket as a control. If you wanted only the bulky profile to change, check whether you reused a linked rate when you meant to create a separate one. The distinction matters particularly when a colleague recognises the rate by its name but does not know that several profiles depend on the same object.

For your own change record, separate the reason from the scope. The reason might be a different packing arrangement for the bulky item; the scope might be one profile and one destination region. Record the old and intended results for all three baskets. This makes the review small enough to repeat after a rate update. It also helps you reject an accidental change to the regular product without having to remember what its checkout looked like before the edit.

How much preparation sits behind one charge versus two parcels? #

The AirPost constants checked on 13 October 2026 give a platform fee of €0.85 per shipment and a recommended small-parcel preparation payment of €2.25. Together that is €3.10 for one shipment before carrier transport. If the packing plan genuinely requires two qualifying small-parcel shipments at that recommended payment, the same component becomes €6.20. The extra preparation component is €3.10; the transport for each parcel must still be added.

These are euro-denominated AirPost components, not a pound sterling quote for your Wix checkout. Your agreed sender payment can differ, and a bulky item may need another parcel category or an entirely different service. Packaging, stock transfer and any other agreed work also need a place in your budget. The example answers one narrow question: suppressing a second checkout charge does not suppress the second physical preparation job. Use your own booked services to complete the comparison.

If you are considering outsourcing fulfilment through AirPost, agree the stock location, packing scope and order handover before changing the customer promise. Do not infer a Wix integration from the existence of shipping profiles. For a first outsourced order, give the sender the actual items, the destination and the intended service. The broader small-webshop onboarding checklist can help you keep that handover separate from the checkout configuration.

Which checkout evidence should you keep before publishing the change? #

Keep one compact acceptance record containing the three baskets, destination, expected option, observed option and proposed parcel plan. Add a second destination only if it exercises a region difference between profiles. For a mixed basket, inspect the delivery wording as well as the total: would the buyer reasonably understand that some goods are collected while others are shipped? If the result needs an explanation from customer support, revise the offer or restrict the basket before ordinary orders use it.

Finally, trace the accepted mixed basket to the packing instruction and the label or collection process. A successful price calculation is useful evidence, but it does not prove that the exceptional product can travel in the planned box. Keep an unresolved product excluded from the promised service until you have checked the physical requirements. Once the three baskets match their intended outcomes, subsequent changes have a clear starting point: you can repeat a specific case instead of reopening every setting in the shop.