Warehouse location can change parcel distance and the shipping-zone distribution. The economic result still depends on the package, service and rate agreement used for the actual order.
A lower average zone is a useful signal, not a complete parcel P&L.
Use the same order file
For each candidate node, price representative shipments with destination, packed dimensions, weight, service and order timing. Include applicable contracted surcharges and discounts using current carrier or provider inputs. Record quote dates and terms.
Check dimensional-weight treatment and exceptions with the rate source rather than inferring them from geography. Price actual multi-item orders when they materially change the package mix.
In a fictional comparison, a location saves $0.80 in average all-in parcel cost across 10,000 annual orders: $8,000. If its incremental inbound and warehouse costs total $9,500 annually, the simplified network result is $1,500 worse before inventory, setup and other omitted costs. No real rate is asserted here.
Keep service in the comparison
Use the defined customer promise, available SKUs and processing cutoff to estimate service performance. A cheaper rate that misses the agreed requirement is not an equivalent option. A more expensive location can still be justified when the measured service benefit matters enough to the business.
Compare annual network cost and capital at the same demand level. Parcel zones help explain the result; they should not decide it alone.
Related guide: Wholesale pricing and retail trade math. Contact Channel Checkride to review the full account and network model.