Why is an item price changing on invoices, and how can it be resolved?

Problem

Item prices change on certain invoices due to dynamic pricing being applied instead of a fixed, static price. This occurs when the Use Static Prices option is not enabled for the item in the Pricebook.

Solution

Note: Depending on your account's configuration, you might see one or more of the following:
Items and Pricing instead of Pricebook.
Customer instead of Homeowner.
Procurement instead of Inventory.
The names are different, but everything works the same way. For more, see Commercial Personalization Platform - FAQ.

Edit the item

Go to the navigation bar and click Pricebook.
Find the item and click Edit.
Check the box for Use Static Prices.
Click Save to update the item.