Warehouse memo, 2026-08-02.

Invoice 4471, item 12: price 120.00, restocking 18.00, handling 12.00, shipping 3.00.
Invoice 4472, item 4: price 200.00, restocking 30.00, handling 20.00, shipping 5.00.

The restocking rate for `fee` is the rate these restocking amounts charge on their prices.
Handling and shipping are flat service lines, not rates.
