The cost of one of these has gone down about 95%

We're used to prices going up, up, up -- but the cost of one of these has gone down about 95 percent since the first one was sold. What are they?


ANSWER: Air conditioners. The first home AC units, introduced in 1931, cost $10,000 -- the equivalent of $120,000 in today's dollars.



(Photo Credit: Getty Images)

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