Here's some cost of living prices for 1965 for the US:
Average Cost of new house $13,600.
Average Income per year $6,450.
Gas per Gallon 31 cents
Average Cost of a new car $2,650.
...and here it is for 1970:
Average Cost of new house $23,450
Average Income per year $9,400
Average Monthly Rent $140.00
Cost of a gallon of Gas 36 cents
and then some US car prices in 1970:
Datsun 210 $3,869
Dodge Colt $4,785
AMC Gremlin $1879
Buick Le Sabre $3,337
Chrysler Barracuda $2,764
Dodge Dart Swinger $2,237
Plymouth Fury Sedan $3,303
Mustang Fastback - $2,771
MB280SL...about $7500