Not sure about '82 but in '86 I bought a new Z28 Chevy Camaro, fully loaded, (305ci engine with tuned port fuel injection, t-tops, leather seats, etc) for about $14k. That's the only car I ever bought new. It would probably have been $12k in '82. A similar new car today would be between $25k and $30k, however, features are more deluxe and sophisticated in almost all newer cars as compared to their ancient ancestors. For example, standard cars of the day had manually set mirrors where you opened the window and pushed on the mirror to set it. The Camaro had mirrors that could be adjusted using a little "joystick" mechanical linkage from inside the car without opening the window. Today, mirrors are commonly motorized with controls easily reached from the driver's seat. Very few cars had power seats in the '80s, but they're pretty common today.
Also, in 1984, I bought some loss-leader 19" color TVs as Christmas presents for $219. The going rate for name brand 19" sets was about $300+ and the salesmen tried hard to talk me into the more expensive sets, even going so far as to pre-adjust the image controls on the cheap sets to make them look bad. Today, you would get a sharp looking 32" digital set for the same $300 (or less), so while the cost of food and other comodities has risen with monetary inflation, technology has gotten cheaper.