Question regarding upgrades...Does it matter when the upgrades are bought? For example, if I buy the first lemonade stand upgrade(profitx3) at the very beginning of the game, will that be less beneficial than if I buy 200 lemonade stands and then buy the upgrade. The way the multipliers work makes me think that the best way to play would be to wait as long as possible before buying any upgrades. The more items you buy before getting the upgrades, the higher the profits when you finally do buy the upgrades. Am I wrong?