expend something for something
to pay a certain amount for something. I expended an enormous amount for skin creams. How much money did you expend for this gaudy tie?
expend something in something
to use or consume something in some activity. You expend too much energy in talking. Harry expended a lot of time in the preparation of his speech.
expend something on someone or something
to use something on someone or something. Don't expend too much energy on him. He isn't worth it. There is no point in expending any more money on this car.