Just click all of the items to start, and watch your smart auto-buying system make you loads of cloud fluff. It it designed to not buy the cheaper item if it can afford the more expensive one. All of the credit really goes to Justybear. He deserves to have your views.
I really just rearranged the script so that it auto-buys if you have enough money, and if you have enough to afford a bigger item, it gets that instead. [WARNING] It may look like you are not making money, but you are really spending it on items. Roll in loads of cloud fluff and boast about your scores to your friends.