Hi siska72,
Thanks for reaching out here. Welcome Back! It's important that you're on the right track with recording your expenses and cost of goods sold, in QuickBooks Online. I'd be happy to provide some insight here!
To track inventory items successfully, I recommend following this link, to understand inventory assets and cost of goods sold, in QuickBooks Online. However, if you're still uncertain, I suggest speaking with an accounting professional for their expertise and best course of action. If you don't have an accountant, we can help you locate a ProAdvisor in your local area.
Should you have any other questions, please feel free to reach out again. We'd be glad to help!