There is no way that I could justify such an expensive toy. A 4.5lb box of Savogran TSP (the real stuff, not sodium metasilicate passed off as TSP) costs around $11.00 at Home Depot. A rounded teaspoon in a 5-gallon soak will leave even filthy kegs spotless. There is no need to disassemble a keg when it clean it. All one needs to do is add cleaner, fill the keg completely to the top, push down on the liquid poppet until liquid comes out of it, and let it soak. I have always used picnic faucets in a standard fridge, so I seal a keg, add a picnic faucet, and run cleaner through the picnic faucet before removing the lid and topping off the keg with hot water.
I am curious as to how people who are so water conscious chill their wort? For me, chilling is the largest single use of water in brewing. I used a minimum of 10-gallons when chilling only 3.5 gallons and that is with the first five gallons running into a white bucket for cleaning and the second five gallons recirculating with ice.