Hi Kt5, Welcome to the forum.....The best thing to do regarding the wholesale issue is simply find a retail Interior design store or custom sofa manufacturer and Warwick should actually be able to give you a list in your area and you can purchase the fabric that way.....
Alternatively you may be able to find off cuts on places like ebay or other Online Fabric stores.....
You could go somewhere like
I just Love that Fabric
They may even be able to get it for you or head you in the right direction.
We also love to get to know our new members so if you get a chance pop over to the Introduce Yourself section and let us know how you found us....