So you are suggesting that each and every time that you spend money, what you are buying has moral value?
Are you now stating that Jim's actions in the thought experiment were in fact, moral? After all, now he can just say to himself, "Well every time you spend money, the purchase has positive moral value, therefore my actions could not possibly be immoral!"
If you support this position, that means that it was moral for Jim to choose to buy air tanks in which he knew he would never need and knew they would never serve a purpose, over saving the lives of countless children.
Or do you think that letting someone die is not immoral?