“and one price for when an item is sold as part of our machines (an assembly in QB).”

If it is sold as a component in a machine, then the individual Component price won’t even be used. You are not selling it, under this scenario, so that is not applicable here. […]

Resolution for 'cost without issue: 'How can you have two sell prices for the same item, while still keeping your cost without losing the ability to track inventory levels?' available: Yes.

The cost without 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 cost without issue yourself by looking for a resolution described in the article. If it is a complex cost without issue or you are unable to solve the issue, you may contact us by clicking here or by using other cost without support options.

For more information about resolving issues related to cost without in Quickbooks/QBO or to get support for the issue 'How can you have two sell prices for the same item, while still keeping your cost without losing the ability to track inventory levels?', click the link below: