Near as I can figure if one were to buy 2 cans Power Drive @ $12.00 each then it’s about $0.39/serving.
Alpha GPC if you take 900 mgs. would be $1.04/serving ( I personally don’t find effect till dosing up to 1,200 mgs so that makes it $1.39/serving or about 3.5x the price of Power Drive).
Yes, comparing apples to oranges here because GPC obviously a newer and superior product - just curious of your results if you have used both products. Some have even used both in a stack.
I have used both separately and have gotten good results from both products although it appears Power Drive works better for me, not sure why.