What kind of rider are you? Are you or do you want to race? If you are a recreational cyclist, regular powdered Gatorade is very low cost. However, the down side is that it has a large fructose content, so it becomes hard to digest on long rides.
Powdered gatorade is sweetened almost entirely with sucrose, so you don't have fructose issues. Premixed normal gatorade is HFCS and can cause issues. Gatorade endurance has sucrose. So you need to read the labels.
But regardless, gatorade is too sweet - you won't drink enough to cover your hydration and carb needs.