Um, 7-Up is .99 every day at 7-11
You saved .96 cents.
Your opportunity costs lost in driving to Shop-Right to save your .96 obviously costs you much more.
Another thing--You failed to factor in the indirect costs of your decreased health and increased tooth decay.
Drink water. Its free and you don't have to burn gas, consume plastic, and it is beneficial, not detrimental, to your health.
Now excuse me as I get down off my soapbox.