Hello Ankur,
In standard, product master extraction does not include price. Please see note 2062688 which describes how you can include price during extraction.Alternatively, you can edit the price after you add the item to cart -> Review cart -> item details. Price is editable in Item details.
The editing of price is item details is applicable only in SRM UI Add-on. The Fiori My SC app does not permit the edit of price.
Since you use Fiori app as well, it would help to update the price for the product master record at the time of extraction.
BR,
Ranjani