But that headline is a lie. The CBO did not say ObamaCare will "cost less". What it said is that Obamacare will cover 3 million FEWER people than promised, and by not covering them, the cost of ObamaCare is reduced accordingly.
It is almost unbelieveable how the media spins this stuff. Of course the cost will go down if millions more people will not be covered. And your grocery bill would go down if you stop eating!