So post was actually inspired by a guy who was a rep for gas stations, so spent his day driving from gas station to gas station to like take inventory, make orders, and what not.
Where at each gas he would buy a single energy drink for like 5 a day.
Buying energy drinks exclusively from gas stations has to be the least cost effective way to get caffeine.
So while your coffee machine isn’t the cheapest… by the stars you’re miles ahead of that guy.