Is there someone talking about only repealing ACA? I don't think so.I'm wondering if you are aware that the CBO and JCT links embedded in your top post link are about the cost to taxpayers for repealing Obamacare -- not the cost of Obamacare.
According to the CBO and JCT, repealing Obmacare is much more expensive than keeping Obamacare.
Repeal of the PPACA means greater costs to US taxpayers and greater debt.
Don't believe it? Here's the CBO and JCT links from the top post link.
CBO: http://waysandmeans.house.gov/uploadedfiles/hr6079.pdf
JCT: http://waysandmeans.house.gov/uploadedfiles/jct_june_2012_partial_re-estimate_of_tax_provisions_in_aca.pdf
They are talking about repealing and replacing ACA.