How much is the Peugeot 505s Turbo Diesel?
cost refers to price; Peugeot 505s Turbo Diesel refers to car_name = 'peugeot 505s turbo diesel'
SELECT T2.price FROM data AS T1 INNER JOIN price AS T2 ON T1.ID = T2.ID WHERE T1.car_name = 'peugeot 505s turbo diesel'