Products QPX Express API Pricing and Usage Limits QPX Express API pricing is based on usage. Pricing Free quota There is a free quota of 50 queries per day. Usage fees 1 query: $0.02 US Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated October 31, 2017.