Caffeine pills?

[xoxoxoBruce]

Damn, Amazon doesn't sell bulk caffeine any more, only pills. But Business Insider bought a bag, 500 grams (50% natural, 50% synthetic) on the net for $30.
I was surprise by...

That 500g bag contains as much caffeine as is in 2,500 to 5,000 cups of coffee — or the same as 15,625 cans of Coca-Cola (or 11,904 Diet Cokes).

I should think people who buy Diet coke, would want more caffeine than regular Coke drinkers.