Duplicate Post Plugin By Enrico Battocchi
This plugin is great if you plan to have many similar Posts, Pages, Services or Products.
Create a Page, duplicate it and then make minor changes.
Really easy and always works for me, even with custom posts.
I am using it on EngineerCaps.com duplicating products. Saves the time of duplicating attributes.
Download the version available when we wrote this post here:duplicate-post.2.4.1
Check for more information,updates and support here