How to create/add “For Sale” on Facebook Group?

Facebook has a new "For Sale" feature in Facebook groups!
Facebook introduced a new feature for Facebook groups that will allow members to display items for sale. Items are posted with description, amount and pick-up or delivery location. This feature was announced by Facebook on February 10, 2015. See here.
The addition of the new "For Sale" feature allows members to add price of the item. This is displayed in the item's photo in the group as shown in the picture below:

The item post looks like this:

Facebook did not explain any specific requirements for applying for the "For Sale" feature. So in case they have some criteria to screen your application, it may be good to apply only if your group has sufficient members and activity.

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