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Disinfection system that costs $125,000. many of them are now in use. >> $125,000. im trying to figure out -- i think thats well worth the money. >> what they charge for four doses of aspirin. >> at least you will go to a hospital thats clean. i will take it. some other robots to snow you now. these are like small versions of the drones shown on "60 minutes." >> they do more than deliver packages. they actually rock. ♪ >> squadron of flying robots that plays instruments and sounds pretty dar...