I do not have advanced pricing since I do not enterprise

But, enterprise has price level lists, which can be used to discount by qty

name a price level <50, and set the custom prices to discount 2.5%
name a price level <100, and set the custom prices to discount 5%
etc

then on the […]

Resolution for 'Advanced Pricing issue: 'How do I use “Advanced Pricing” so a % discount based on volume of sales applies to a group of items, and not just a single item?' available: Yes.

The Advanced Pricing issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the Advanced Pricing issue yourself by looking for a resolution described in the article. If it is a complex Advanced Pricing issue or you are unable to solve the issue, you may contact us by clicking here or by using other Advanced Pricing support options.

For more information about resolving issues related to Advanced Pricing in Quickbooks/QBO or to get support for the issue 'How do I use “Advanced Pricing” so a % discount based on volume of sales applies to a group of items, and not just a single item?', click the link below: