Basket Promotion Checkout Auditor

How to use Basket Promotion Checkout Auditor

Enter the quantities already present in your cart. Apply each declared same-item buy/get grouping, one eligible order coupon and the explicitly chosen shipping threshold stage, then inspect conserved whole-cent line discounts.

1. Use the example as the schema; replace its labels and entered model assumptions.
2. Enter the quantities already present in your cart. Apply each declared same-item buy/get grouping, one eligible order coupon and the explicitly chosen shipping threshold stage, then inspect conserved whole-cent line discounts.
3. Calculate, inspect the complete witnesses and limitations, then copy or download the JSON report.

Good to know

• 1–50 distinct lines, quantities 1–1,000,000 and unit prices in exact cents up to 1,000,000,000. A buy/get rule has positive whole counts up to 1,000,000 each. Free units must already be included in the cart quantity.
• One optional fixed or percent coupon; percent 0–100 with six decimal places. Coupon threshold tests only marked eligible post-product amounts. Fixed/percent coupon cents are capped to that base and allocated by largest remainder, source-order ties. Shipping basis is explicitly before or after the order coupon.
• No live offer verification, retailer compatibility, tax, location shipping rates, extra discount stacks, automatic best combination, invented free products, currency conversion or purchase. All prices use one user-chosen two-decimal unit.
• Local calculation with no upload, input persistence or outside lookup. Model JSON is limited to 30,000 characters and 10,000 values. Decimal quantities are strings with up to six places; count fields use plain JSON integers. Exact fractions are capped at 8,192 bits. The complete JSON output is limited to 1,000,000 characters; approximate numbers preserve their stored values. Unsupported states fail explicitly.