Volvic is $28.81/12 on Amazon. At the same 100% mark-up, it's $4.80/bottle at 7-11.
That's $8/day, plus local sales taxes, or nearly $2100/year.
Getting a good water bottle and filling it at home is likely too cheap to meter. Making good coffee at home and using that for the caffeine boost is a lot less than $3.20/serving, and then there is this:
http://www.sciencedirect.com/science/article/pii/S1443950608...
The results of a study showed that the ingestion of one, 250mL can of sugar-free Red Bull, in a sample of 30 healthy young adults, had an immediate detrimental effect on both endothelial function, and normal blood coagulation. This temporarily raised the cardiovascular risk in these individuals to a level comparable to that of an individual with established coronary artery disease.
Finally, he jumps straight into 12 reps dumbbell press @ 30kg (66lb per hand). Riiiight!