I found a website which sells a WordPress theme licensed under GPL that has this in their terms on the checkout page:
Our products are licensed under the GNU General Public License (http://www.gnu.org/licenses/gpl.html) version 2.0 or later.
You may not provide access to the installation of our products as a hosting service provider or a reseller, and you may not provide to others as part of a “Software As-a-Service” (SaaS). You may not bundle it and resell it as a commercial, off the shelf, license or product.
Is this legal? I thought that the GPL gives you the right to resell and host it as a SaaS if you desire so. Can I be legally bound to their terms and conditions and their GPL at the same time?