Overview

Amazon's pricing safeguard system automatically flags listings when the submitted price appears unusually high compared to expected ranges. Error 18671 is the specific alert sellers encounter when a product price exceeds Amazon's anomaly detection thresholds or their own configured maximum price limits. Understanding what triggers this error and how to resolve it quickly can prevent listing delays and lost sales.

Key Points / What Sellers Need to Know

• Price anomaly detection is automatic — Amazon continuously monitors submitted prices against category norms, and any price that significantly exceeds the typical range for a product type will be flagged before it goes live.
• Multiple triggers exist — This error can fire due to category price range violations, account-level maximum price thresholds, manual data entry mistakes, or repricing tool misconfigurations.
• Listings are blocked, not removed — When error 18671 triggers, Amazon prevents the price update from taking effect rather than removing your listing entirely, giving you the opportunity to correct the issue.
• Repricing tools are a common culprit — Automated pricing software with incorrect boundaries or data feed errors can generate prices that exceed reasonable thresholds without the seller's knowledge.
• Historical pricing matters — Amazon also compares your submitted price against your own pricing history for the same ASIN, so a sudden dramatic price increase on a product you've sold before can trigger the flag.

Common Causes

The most frequent reason sellers encounter error 18671 is simple data entry error. Typing $499.99 instead of $49.99, or $4999.99 instead of $499.99, is an easy mistake to make during manual price updates, especially when managing large catalogs. Amazon's system is designed to catch exactly these kinds of typos before they result in embarrassing or damaging listing prices that could erode buyer trust.

Beyond typos, sellers who use repricing automation tools should pay particular attention to their minimum and maximum price boundary settings. A misconfigured repricer can generate wildly inaccurate prices if its rules interact with unusual market conditions or corrupted competitor data. Similarly, if you've set a maximum price threshold in your Seller Central account preferences as a safety net, any price submission above that ceiling will be rejected with this error code.