$800 Gold in 1980, times ten at least, would be $8,000 today. Going back to 1970 many things are times 15 and 20 mostly. Gasoline is under priced it used to be about .25 cents tomes 20 it should be $5/gallon. So it only went times ten.
A $2500 new car in 1970 times 20 is $50,000 today. A slice of pizza and a coke used to be .25 cents now its near $5. The old $130/mo apartment today should be $2600/mo.
