Most I ever got back from a class action was $70. In a settlement where the defendant was fraudulently overcharging for their product by hundreds of dollars.

The meagre payout didn't cover the amount I was overcharged by (by then I didn't care anyway) and the class action settlement was little more than a slap on the wrist for the billion dollar corporation because they earned more in the process of defrauding people than they lost in the payments.