Bill or no bill, that doesn't mean people can't predict what it will cost just because you don't like the numbers. We predict hurricanes every year before hurricane season. Sometimes those predictions are right, sometimes their wrong, sometimes their close, and sometimes they are very far off. Still the predictions are made. You assume Obama will get what he wants, but I think his Gitmo problems proves we don't always get what we want.
Hurricanes are predicted by professionals who are fairly open about the models they use to get their results.
If someone hired by an association of beachfront property owners in the Gulf told you, without any explanation or evidence, that hurricanes were going to decline severely, how quick would you be to believe him?
Honestly, is there any reason to believe Feehery, other than wanting to believe him?
As for Obama not getting what he wants, what's your point? The main obstacles will be centrist Democrats like Baucus, Nelson, Bayh, etc. Their agenda would be to water down the plan, omitting a public option and protecting the status quo. That's going to drive expenditures down, if anything.
So why would you think the price tag would wind up higher because of opposition in Congress? Again, any reason to believe it other than wanting to?