Prices of Japanese Car Imports Under the “voluntary” export restraint (VER) on Japanese car imports, the average price rose from $5,150 to $8,050 between 1980 and 1985. Of that $2,900 increase, $1,100 was the result of quota rent increases earned by Japanese producers. Another $1,650 was the result of quality improvements in the Japanese cars, which became heavier and wider, with improved horsepower, transmissions, and so on. The remaining $150 is the amount that import prices would have risen under free trade.