Welcome to the Community, @8208140032088.

Since these items are imported from a third-party, QuickBooks Online (QBO) will not recognize that they're already VAT inclusive. There are two options that I can think of to solve this.

The first one is to choose No VAT or manually change the price instead. However, this applies if you're using QBO for recording purposes only.

On the other hand, if you'll file and pay these taxes inside QBO, you need to recreate these items in the system. This way, the amounts will not double-up when you choose the VAT inclusive or Inclusive of Tax in a quote or invoice.

Here's how to add them:

1. Go to the Sales menu at the left pane to get to the Products and Services page.
2. Tick New or Add a product or service, then pick Stock. 
3. Enter the necessary information.
4. Hit Save and close to complete.

For more information about the process, refer to these articles:

• Set up and track your stock in QuickBooks Online.
• Add stock products in QuickBooks Online.

Please let me know if you have any other questions or concerns by leaving a comment below. I'm more than happy to help. Have a good one!