Shouldn’t it be part of the asset/inventory value and a not a cost?

the repair is part of the item cost

The way I do this, buy the item and use a dummy bank account called clearing you create for this purpose in the chart of accounts

then pay for the repairs to […]

Resolution for 'company purchases issue: 'Our company purchases used equipment to resale. We have to pay for repairs/parts for those inventory items we bought.How can I get those costs tied to the inventory item?' available: Yes.

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

For more information about resolving issues related to company purchases in Quickbooks/QBO or to get support for the issue 'Our company purchases used equipment to resale. We have to pay for repairs/parts for those inventory items we bought.How can I get those costs tied to the inventory item?', click the link below: