The retail price would stay at $3000, and carrier would pocket all of the difference.
Or more than likely, they would actually raise the price, citing restructuring and reorganizing costs (to pay for the new plant in mexico) take a charge against earnings, and dump all of their US employees onto unemployment, while getting the feds to “retrain” them, courtesy of FTAA with our tax dollars.
This is an old game, and has been going on since the late 1980’s.
Businesses don’t even try to hide it anymore, because one whole generation has lived this new reality. They have no idea what is was like to actually make things in the US.
Advocates of outsourcing keep telling us how great cheap production costs are for consumers. The dirty little secret is that few if any of these cheaper production costs are passed onto a consumers. If people are currently willing to pay $3K for a US made air conditioning unit, Carrier will go on charging 3K for the same unit even if it halves production costs by building them in Mexico.