Hello, jpo.
I appreciate you taking the time to reach out here in the Community with your question about price rules for your customers. I'd like to help point you in the right direction for using API in QuickBooks Online.
You may be interested in creating your own application that can integrate with QuickBooks so you're able to use price rules. Once the app is up and running, you can share it with other users. This can be done through the Intuit Developer website.
There are also several apps already available to connect to your account. You can find these by clicking the Apps tab in the left navigation bar, or by visiting https://apps.intuit.com.
I wish you and your business continued success. I'll be around if there's anything else I can help with. Take care.
