Duplicating WordPress in to a subfolder

Okay so this is what I am doing:

I built a site for a client selling a product, and have WordPress installed and running in the root folder. I want to duplicate the site in to a subfolder, but each subfolder will be a version of the original site that will cater to each of the client’s sales reps. So the duplicate sites will be mirror images of the original site, but the contact information will be of the sales rep’s instead.

Is there an easier way to completely duplicate the site and not have any issues, as opposed to reinstalling wordpress in to a subfolder through the client’s hosting company?

Thanks in advance.