Overview

Sellers enrolling products in Amazon’s wholesale purchasing program sometimes encounter Error 18427, which signals a pricing mismatch during registration. The error appears when the list price and the manually entered cost price do not align with Amazon’s automatically calculated purchase price, and it can halt product onboarding. Promptly fixing the discrepancy keeps inventory flowing into Amazon’s retail channel and protects cash‑flow timing.

Key Points

• Dual‑price entry triggers rejection — Providing both a list price and a separate cost price in the registration form creates a conflict that Amazon’s system cannot resolve.
• Amazon derives cost automatically — The platform applies the program‑specific discount percentage to the list price you submit, generating the exact amount Amazon will pay per unit.
• Mismatch generates Error 18427 — When the cost price you input differs from the system‑calculated figure, the registration is rejected with this error code.
• Submit only the list price — Removing the manual cost entry and allowing Amazon to compute the purchase price eliminates the discrepancy.
• Discount rates vary by marketplace — Each Amazon region may use a different discount structure, so the same list price can produce distinct purchase prices across North America, Europe, and Asia.
• Rounding and outdated discounts cause false mismatches — Small rounding differences or using a previous discount rate can produce a cost that looks correct but still fails validation.

How the Pricing Calculation Works

1. Enter list price — You provide the retail or reference price for the SKU, such as $120 for a kitchen gadget.
2. System applies program discount — Amazon multiplies the list price by the agreed‑upon discount (e.g., 35 %), producing a purchase price of $78 in this example.
3. Cost field left blank — Because the discount calculation is automatic, the cost‑price field should remain empty; the platform fills it with the $78 figure internally.