I have created one order from backend in Magento 2.0.7 and selected item for order at that time.
I want to display product custom attribute Best Price
with item details.
How can I do this?
I think you need to Override this file
\vendor\magento\module-sales\view\adminhtml\templates\order\details.phtml
and then add your column and values here.
Set the values of “Visible on Product View Page on Front-end” and “Used in Product Listing” options under storefront Properties to "Yes" while creating the attribute to display it in Product list and view pages.