When Importing the Orders from Amazon Seller Central using Celigo flows, the Item Price inclusive of tax is imported. The flow mapping by default is mapping the Item price inclusive of item tax. If there is requirement to exclude the tax the mapping for Item price can be modified as
{{#if $.OrderItem[].ItemPrice.Amount}}{{ subtract $.OrderItem[].ItemPrice.Amount $.OrderItem[*].ItemTax.Amount}} {{else}}0{{/if}}