RTFA
As the article mentions the fuel cell case is vented and the process will be slow enough that it will be vapor, not droplets.
As for the price per KwH note a)Cartridge fails it's replaceable. b)Since when did Jesus phone users care about money? Most of them are on contract that will (relatively ) painlessly extract the cash from their accounts monthly and the rest are self employed meja types who'll put it on their expenses.
As a business plan this is a pretty smart move. Regular readers know what I think about Apple and fuel cells already.
BTW if cash is about 2x losses and they are making sales that suggests they've got at least 2 years to put this together before they run out of money.
I'm hoping they don't run out of nerve and unload the business to the first customer (IE Apple) that offers them a bit more than was invested.