I had 2 of these and sold one a while back. I just picked up 2 mp40's so going to sell the second 4k gyre. It is still in the tank so needs cleaned up. It also comes with a second drive motor that is brand new. The gyre was not working at first so they sent me a new motor, but a firmware update was all I needed. The second drive motor never seen water. Price is $200 shipped and no need to pay until you see a pic of it all cleaned up. I am going away for the weekend so wont be done till Monday.