more bang for buck
[more/a bigger etc.] bang for your buck(American informal)
if something that you buy gives you more bang for your buck, you get more value for your money by buying this product than from buying any other
Usage notes: 'Buck', in American English, is an informal way of saying 'dollar' (= a unit of money in America).If all you want is death-benefit cover, this type of insurance policy will give you more bang for your buck.