Ready to ship
One fee below the threshold. Free at or above it.
Shopify shipping discount
Warehouse splits are not the customer’s problem.
Ship Ship charges at most one standard-shipping fee for each fulfillment promise, even when Shopify divides the order across several physical locations.
Install Ship Ship from Shopify, then manage the rule inside Shopify Admin.
The rule
Two timing pools. Two independent thresholds.
Preorder
The same rule, calculated independently from ready-stock items.
Any warehouse count
Extra fulfillment locations never create extra standard fees.
Calculated where checkout happens.
The shipping rule runs inside Shopify checkout, after merchandise discounts. It works without storefront cookies or signed cart metadata and leaves express and international carrier rates alone.