I agree with that. They taste good, due to the shit that they use, other than that it's simple caffeine with a few token ingredients thrown in, e.g. tiny amounts of taurine and sometime B vits, etc.
Save your cash and start brewing your own coffee and/or your own formula, e.g. caffeine, green tea extract, tyrosine, chocamine, grapeseed extract, B vits, etc, the combinations are numerous.