Use the dated merchandise base
One selected sweatshirt,one two-shirt pack and one leggings offer total£30.00 in merchandise. This is arithmetic across reference offers,not proof of one accepted combined basket. The sweatshirt’s store-delivery-only condition remains visible and may require a separate genuine checkout.
Exact credits stay exact
The ledger uses integer pence. A confirmed£30.00 merchandise-only credit leaves zero merchandise cost;£30.01 is rejected because it exceeds the base by one penny. Two user-entered£47.99 items produce£95.98,and three10p items produce30p without floating-point subtraction errors.
Delivery survives a full credit
With hypothetical£4.99 shipping,£1.25 additional tax and£0.00 other charge,a full merchandise credit still leaves£6.24. These are tool test inputs,not quoted retailer fees. Enter only actual additional charges and do not add included tax twice.
Unknown fields remain unresolved
Blank or invalid charges withhold the final total. Prices must be bounded,nonnegative and no more than two decimal places;counts must be whole. No addresses,names,child measurements,orders or payment information are sent. Check the exact selected seller conditions before acting on any calculated amount.
A concrete purchase record
A full merchandise credit can leave a genuine shipping charge payable. The ledger keeps those fields separate so a zero item subtotal does not become a false zero delivered total. If the sweatshirt and other items require separate checkouts,enter only a clearly defined actual charge total rather than assuming the seller combines them.
Sources & scope
Checked November 5, 2026. Manufacturer and retailer references support the specific statements. Dated displayed prices are not final checkout quotes, performance rankings or performance testing. This shopping reference does not replace the exact product label or retailer instructions. Current received labels and independent textile/consumer/content/commerce review remain pending.
John Lewis Blue sweatshirt2years45343914 ↗
John Lewis Black two-shirt pack3years45303515 ↗
Polarn O. Pyret Black leggings2–3years85416876 ↗
John Lewis UK native clothing chart ↗
Keep reading
How do the three selected clothing quotes compare? ↗
Is the selected clearance price the same as a general promotion? ↗