Fedex for wooCommerce

I want to link my fedex account to wooComerce so that my account discounts apply to my customers.

Will WooCommerce’s plugin : https://www.woothemes.com/products/fedex-shipping-module/ work ?

Is there a free version I can use ? I know there is for Paypal so I was wondering if this is the case for Fedex aswell ?

Thanks
Jonathan