@Jazbill2000 

As far as I know, the price rule feature is only available in QBO US version

https://quickbooks.intuit.com/learn-support/en-us/manage-lists/set-pricing-rules-in-quickbooks-onlin...

If you are trading goods, consider having an inventory management app with B2B portal to manage multi listprice for your customers and integrate it to your QBO. You can import the listprice to the app.

But if you are using QB Desktop, you may utilize a 3rd party tool to import the Price Level List.