I have 2 Vortex water moving systems with controllers. These units are new in the box and come with the Generation 2 propeller mangnet assembly for the inside piece for each unit as an additional benefit. $600 dollars for both and the gen. 2 magnet upgrades, includes shipping. pm me if interested.(these units retail for 419 dollars each plus tax and shipping. ( this is a deal so confirm before I change my mind.) (US shipping only at this price continental 48 states)