I don't know. Maybe there is one in Pensacola, but lets say my car gets 20mpg and that Pensacola is 60miles away, totalling 120 round trip miles. That would be 6 gallons of gas consumed, plus vehicle wear and time. Following me? Those 6 gal of gasoline (low grade)@ a conservitive $2.40 per gal would cost $14.40.
If the Costco price is $13.69 per 12 pack, or $1.14 per unit, that would equate to $4.56 per four pack. If I wanted only a four pack, the out of pocket cost would be no less than $18.96 ($4.56+14.40 gas). Now this assumption would include there actually being a Costco as close as Pensacola. If I wanted to save a few bucks and time, I would just drive to Publix at WaterColor x-ing and pay my $7.99.