Meka robots has taken a modular approach to the industry. The mobile manipulator or M1 has three different optional faces to choose from, along with your choice of grasping devices. One unit costs $340,000 USD. M1 features compliant force control throughout it's body, a customizable sensor head, durable and strong grippers, and a small footprint omnidirectional base.
Like PR2, the M1 runs on ROS. Learn more about the Meka's M1 on their home page: http://mekabot.com/products/m1-mobile-manipulator/