“I guess I should list all my items under inventory.”

You do that because you factually are managing Products that you buy, stock, reorder, and sell. Otherwise, you don’t use Inventory for a nonivnentory operation.

“If you wanted to see which one of your expenses was costing the most money, what report […]

Resolution for 'and sell issue: 'Under reports-Purchase, It should list Purchase Orders, not Purchases by Item Detail. You can purchase items without using a PO. It’s very misleading.' available: Yes.

The and sell 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 and sell issue yourself by looking for a resolution described in the article. If it is a complex and sell issue or you are unable to solve the issue, you may contact us by clicking here or by using other and sell support options.

For more information about resolving issues related to and sell in Quickbooks/QBO or to get support for the issue 'Under reports-Purchase, It should list Purchase Orders, not Purchases by Item Detail. You can purchase items without using a PO. It’s very misleading.', click the link below: