Hello,

Thank you for being a member of the QuickBooks family. I'll be glad to help you with the product cost price. QuickBooks Online offers a robust inventory management feature where you can edit your product details in a few easy steps.

If the product is costing you more to purchase, you can edit the cost price by doing so:

1. Select Sales
2. Select Products and Services
3. Locate the product you wish to edit
4. Select Edit under the Action column
5. Change the cost amount
6. Select Save and close

To know more about the QuickBooks Online inventory feature, check this community page.

Let me know if you have any other questions.