Im not sure what the cost is for one to buy, as they are not for sale yet to John Q. Public. I would venture to guess about $1000-$3000, though I may be way off! They are really trying to push this as the next way to travel short distances to work etc. With govt. agencies and other big businesses already placing orders! I think they had a small area sectioned off to test them onboard. I dont know if they are offering this on future cruises (like ours on 9/22) but I am keeping my fingers crossed!!