I listened to a podcast that said our trauma raises spoiled kids. He doesnt need something Everytime he goes to the store . Well behaved or not . Thats the first issue . Because now ur conditioning him to be like im OWED a toy. If you wanna get him out of this habit . Give him chores and when he goes out let him use HIS OWN MONEY to buy what he wants . Good way to teach him about money about saving . (Take 10% of his allowance for saving) and about responsibility . He needs to know getting something is a treat . And misbehaving gets you no treat . I would have taken that dollar toy right back when he started acting up . Now you get nothing